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2021-06-16phy: ti: Fix an error code in wiz_probe()Yang Li1-0/+1
commit b8203ec7f58ae925e10fadd3d136073ae7503a6e upstream. When the code execute this if statement, the value of ret is 0. However, we can see from the dev_err() log that the value of ret should be -EINVAL. Clean up smatch warning: drivers/phy/ti/phy-j721e-wiz.c:1216 wiz_probe() warn: missing error code 'ret' Reported-by: Abaci Robot <abaci@linux.alibaba.com> Fixes: c9f9eba06629 ("phy: ti: j721e-wiz: Manage typec-gpio-dir") Signed-off-by: Yang Li <yang.lee@linux.alibaba.com> Link: https://lore.kernel.org/r/1621939832-65535-1-git-send-email-yang.lee@linux.alibaba.com Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-06-16phy: cadence: Sierra: Fix error return code in cdns_sierra_phy_probe()Wang Wensheng1-0/+1
commit 6411e386db0a477217607015e7d2910d02f75426 upstream. Fix to return a negative error code from the error handling case instead of 0, as done elsewhere in this function. Fixes: a43f72ae136a ("phy: cadence: Sierra: Change MAX_LANES of Sierra to 16") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Wang Wensheng <wangwensheng4@huawei.com> Link: https://lore.kernel.org/r/20210517015749.127799-1-wangwensheng4@huawei.com Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-06-16phy: usb: Fix misuse of IS_ENABLEDChen Li1-2/+2
commit 7c2fc79250cafa1a29befeb60163028ec4720814 upstream. While IS_ENABLED() is perfectly fine for CONFIG_* symbols, it is not for other symbols such as __BIG_ENDIAN that is provided directly by the compiler. Switch to use CONFIG_CPU_BIG_ENDIAN instead of __BIG_ENDIAN. Signed-off-by: Chen Li <chenli@uniontech.com> Reviewed-by: Al Cooper <alcooperx@gmail.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Fixes: 94583a41047e ("phy: usb: Restructure in preparation for adding 7216 USB support") Link: https://lore.kernel.org/r/87czuggpra.wl-chenli@uniontech.com Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-14phy: marvell: ARMADA375_USBCLUSTER_PHY should not default to y, unconditionallyGeert Uytterhoeven1-2/+2
[ Upstream commit 6cb17707aad869de163d7bf42c253caf501be4e2 ] Merely enabling CONFIG_COMPILE_TEST should not enable additional code. To fix this, restrict the automatic enabling of ARMADA375_USBCLUSTER_PHY to MACH_ARMADA_375, and ask the user in case of compile-testing. Fixes: eee47538ec1f2619 ("phy: add support for USB cluster on the Armada 375 SoC") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20210208150252.424706-1-geert+renesas@glider.be Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-05-14phy: ti: j721e-wiz: Delete "clk_div_sel" clk provider during cleanupKishon Vijay Abraham I1-0/+6
[ Upstream commit 7e52a39f1942b771213678c56002ce90a2f126d2 ] commit 091876cc355d ("phy: ti: j721e-wiz: Add support for WIZ module present in TI J721E SoC") modeled both MUX clocks and DIVIDER clocks in wiz. However during cleanup, it removed only the MUX clock provider. Remove the DIVIDER clock provider here. Fixes: 091876cc355d ("phy: ti: j721e-wiz: Add support for WIZ module present in TI J721E SoC") Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Link: https://lore.kernel.org/r/20210310120840.16447-3-kishon@ti.com Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-05-14phy: ti: j721e-wiz: Invoke wiz_init() before of_platform_device_create()Kishon Vijay Abraham I1-10/+7
commit f7eb147d306ad2efae6837e20d2944f03be42eb4 upstream. Invoke wiz_init() before configuring anything else in Sierra/Torrent (invoked as part of of_platform_device_create()). wiz_init() resets the SERDES device and any configuration done in the probe() of Sierra/Torrent will be lost. In order to prevent SERDES configuration from getting reset, invoke wiz_init() immediately before invoking of_platform_device_create(). Fixes: 091876cc355d ("phy: ti: j721e-wiz: Add support for WIZ module present in TI J721E SoC") Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Reviewed-by: Swapnil Jakhade <sjakhade@cadence.com> Cc: <stable@vger.kernel.org> # v5.10 Link: https://lore.kernel.org/r/20210319124128.13308-3-kishon@ti.com Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-14phy: cadence: Sierra: Fix PHY power_on sequenceKishon Vijay Abraham I1-1/+6
commit 5b4f5757f83be34d1428a1ffbb68d4a1966e9aae upstream. Commit 44d30d622821d ("phy: cadence: Add driver for Sierra PHY") de-asserts PHY_RESET even before the configurations are loaded in phy_init(). However PHY_RESET should be de-asserted only after all the configurations has been initialized, instead of de-asserting in probe. Fix it here. Fixes: 44d30d622821d ("phy: cadence: Add driver for Sierra PHY") Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Cc: <stable@vger.kernel.org> # v5.4+ Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> Link: https://lore.kernel.org/r/20210319124128.13308-2-kishon@ti.com Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-11phy: phy-twl4030-usb: Fix possible use-after-free in twl4030_usb_remove()Yang Yingliang1-1/+1
[ Upstream commit e1723d8b87b73ab363256e7ca3af3ddb75855680 ] This driver's remove path calls cancel_delayed_work(). However, that function does not wait until the work function finishes. This means that the callback function may still be running after the driver's remove function has finished, which would result in a use-after-free. Fix by calling cancel_delayed_work_sync(), which ensures that the work is properly cancelled, no longer running, and unable to re-schedule itself. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Link: https://lore.kernel.org/r/20210407092716.3270248-1-yangyingliang@huawei.com Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-04phy: lantiq: rcu-usb2: wait after clock enableMathias Kresin1-1/+9
commit 36acd5e24e3000691fb8d1ee31cf959cb1582d35 upstream. Commit 65dc2e725286 ("usb: dwc2: Update Core Reset programming flow.") revealed that the phy isn't ready immediately after enabling it's clocks. The dwc2_check_core_version() fails and the dwc2 usb driver errors out. Add a short delay to let the phy get up and running. There isn't any documentation how much time is required, the value was chosen based on tests. Signed-off-by: Mathias Kresin <dev@kresin.me> Acked-by: Hauke Mehrtens <hauke@hauke-m.de> Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Cc: <stable@vger.kernel.org> # v5.7+ Link: https://lore.kernel.org/r/20210107224901.2102479-1-dev@kresin.me Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-04phy: USB_LGM_PHY should depend on X86Geert Uytterhoeven1-0/+1
[ Upstream commit 6b46e60a6943d629d69924be3169d8f214624ab2 ] The Intel Lightning Mountain (LGM) USB3 USB is only present on Intel Lightning Mountain SoCs. Hence add a dependency on X86, to prevent asking the user about this driver when configuring a kernel without Intel Lightning Mountain platform support. Fixes: 1cce8f73a561c944 ("phy: Add USB3 PHY support for Intel LGM SoC") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20210129131753.2656306-1-geert+renesas@glider.be Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-04phy: cadence-torrent: Fix error code in cdns_torrent_phy_probe()Dan Carpenter1-0/+1
[ Upstream commit 266df28f9ac16b0dff553d78bc3fb1c084b96b9d ] This error path should return -EINVAL, but currently it returns success. Fixes: d09945eacad0 ("phy: cadence-torrent: Check total lane count for all subnodes is within limit") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Link: https://lore.kernel.org/r/X9s7Wxq+b6ls0q7o@mwanda Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-04phy: rockchip-emmc: emmc_phy_init() always return 0Chris Ruehl1-3/+5
[ Upstream commit 39961bd6b70e5a5d7c4b5483ad8e1db6b5765c60 ] rockchip_emmc_phy_init() return variable is not set with the error value if clk_get() failed. 'emmcclk' is optional, thus use clk_get_optional() and if the return value != NULL make error processing and set the return code accordingly. Fixes: 52c0624a10cce phy: rockchip-emmc: Set phyctrl_frqsel based on card clock Signed-off-by: Chris Ruehl <chris.ruehl@gtsys.com.hk> Reviewed-by: Douglas Anderson <dianders@chromium.org> Link: https://lore.kernel.org/r/20201210080454.17379-1-chris.ruehl@gtsys.com.hk Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-02-07phy: cpcap-usb: Fix warning for missing regulator_disableTony Lindgren1-6/+13
[ Upstream commit 764257d9069a9c19758b626cc1ba4ae079335d9e ] On deferred probe, we will get the following splat: cpcap-usb-phy cpcap-usb-phy.0: could not initialize VBUS or ID IIO: -517 WARNING: CPU: 0 PID: 21 at drivers/regulator/core.c:2123 regulator_put+0x68/0x78 ... (regulator_put) from [<c068ebf0>] (release_nodes+0x1b4/0x1fc) (release_nodes) from [<c068a9a4>] (really_probe+0x104/0x4a0) (really_probe) from [<c068b034>] (driver_probe_device+0x58/0xb4) Signed-off-by: Tony Lindgren <tony@atomide.com> Link: https://lore.kernel.org/r/20201230102105.11826-1-tony@atomide.com Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-12-30drm/mediatek: avoid dereferencing a null hdmi_phy on an error messageColin Ian King1-2/+3
[ Upstream commit b097efba9580d1f7cbc80cda84e768983e3de541 ] Currently there is a null pointer check for hdmi_phy that implies it may be null, however a dev_err messages dereferences this potential null pointer. Avoid a null pointer dereference by only emitting the dev_err message if hdmi_phy is non-null. It is a moot point if the error message needs to be printed at all, but since this is a relatively new piece of code it may be useful to keep the message in for the moment in case there are unforseen errors that need to be reported. Fixes: be28b6507c46 ("drm/mediatek: separate hdmi phy to different file") Signed-off-by: Colin Ian King <colin.king@canonical.com> Addresses-Coverity: ("Dereference after null check") Link: https://lore.kernel.org/r/20201207150937.170435-1-colin.king@canonical.com [vkoul: fix indent of return call] Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-12-30phy: renesas: rcar-gen3-usb2: disable runtime pm in case of failureWang Li1-2/+4
[ Upstream commit 51e339deab1e51443f6ac3b1bd5cd6cc8e8fe1d9 ] pm_runtime_enable() will decrease power disable depth. Thus a pairing increment is needed on the error handling path to keep it balanced. Fixes: 5d8042e95fd4 ("phy: rcar-gen3-usb2: Add support for r8a77470") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Wang Li <wangli74@huawei.com> Link: https://lore.kernel.org/r/20201126024412.4046845-1-wangli74@huawei.com Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-12-30phy: mediatek: allow compile-testing the hdmi phyArnd Bergmann1-1/+3
[ Upstream commit f5f6e01f9164040ba120f30522efdb4deceb529a ] Compile-testing the DRM_MEDIATEK_HDMI driver shows two missing dependencies, one results in a link failure: arm-linux-gnueabi-ld: drivers/phy/mediatek/phy-mtk-hdmi.o: in function `mtk_hdmi_phy_probe': phy-mtk-hdmi.c:(.text+0xd8): undefined reference to `__clk_get_name' arm-linux-gnueabi-ld: phy-mtk-hdmi.c:(.text+0x12c): undefined reference to `devm_clk_register' arm-linux-gnueabi-ld: phy-mtk-hdmi.c:(.text+0x250): undefined reference to `of_clk_add_provider' arm-linux-gnueabi-ld: phy-mtk-hdmi.c:(.text+0x298): undefined reference to `of_clk_src_simple_get' The other one is a harmless warning: WARNING: unmet direct dependencies detected for PHY_MTK_HDMI Depends on [n]: ARCH_MEDIATEK [=n] && OF [=y] Selected by [y]: - DRM_MEDIATEK_HDMI [=y] && HAS_IOMEM [=y] && DRM_MEDIATEK [=y] Fix these by adding dependencies on CONFIG_OF and CONFIG_COMMON_CLK. With that done, there is also no reason against adding CONFIG_COMPILE_TEST. Fixes: b28be59a2e26 ("phy: mediatek: Move mtk_hdmi_phy driver into drivers/phy/mediatek folder") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20201204135650.2744481-1-arnd@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-12-30phy: tegra: xusb: Fix usb_phy device driver fieldJC Kuo1-1/+1
[ Upstream commit 4ea0bf2a52f1eea76578eac5a9148d95f5e181c0 ] In commit "phy: tegra: xusb: Add usb-phy support", an OTG capable PHY device, such as phy-usb2.0 device of Jetson-TX1 platform, will be bound to the tegra-xusb-padctl driver by the following line in tegra_xusb_setup_usb_role_switch(). port->usb_phy.dev->driver = port->padctl->dev->driver; With this, dev_pm_ops set of tegra-xusb-padctl driver will be invoked for the OTG capable PHY incorrectly as below logs show. This commit fixes the issue by assigning an empty driver to it. [ 153.451108] tegra-xusb-padctl phy-usb2.0: > tegra_xusb_padctl_suspend_noirq(dev=ffff000080917000) [ 153.460353] tegra-xusb-padctl phy-usb2.0: driver: ffff8000114453e0 (tegra_xusb_padctl_driver) [ 153.469245] tegra-xusb-padctl phy-usb2.0: padctl: ffff0000829f6480 [ 153.475772] tegra-xusb-padctl phy-usb2.0: soc: ef7bdd7fffffffff (0xef7bdd7fffffffff) [ 153.484061] Unable to handle kernel paging request at virtual address 007bdd800000004f [ 153.492132] Mem abort info: [ 153.495083] ESR = 0x96000004 [ 153.498308] EC = 0x25: DABT (current EL), IL = 32 bits [ 153.503771] SET = 0, FnV = 0 [ 153.506979] EA = 0, S1PTW = 0 [ 153.510260] Data abort info: [ 153.513200] ISV = 0, ISS = 0x00000004 [ 153.517181] CM = 0, WnR = 0 [ 153.520302] [007bdd800000004f] address between user and kernel address ranges [ 153.527600] Internal error: Oops: 96000004 [#1] PREEMPT SMP [ 153.533231] Modules linked in: nouveau panel_simple tegra_video(C) tegra_drm drm_ttm_helper videobuf2_dma_contig ttm videobuf2_memops cec videobuf2_v4l2 videobuf2_common drm_kms_helper v4l2_fwnode videodev drm mc snd_hda_codec_hdmi cdc_ether usbnet snd_hda_tegra r8152 crct10dif_ce snd_hda_codec snd_hda_core tegra_xudc host1x lp855x_bl at24 ip_tables x_tables ipv6 [ 153.566417] CPU: 0 PID: 300 Comm: systemd-sleep Tainted: G C 5.10.0-rc3-next-20201113-00019-g5c064d5372b0-dirty #624 [ 153.578283] Hardware name: NVIDIA Jetson TX1 Developer Kit (DT) [ 153.584281] pstate: 40000005 (nZcv daif -PAN -UAO -TCO BTYPE=--) [ 153.590381] pc : tegra_xusb_padctl_suspend_noirq+0x88/0x100 [ 153.596016] lr : tegra_xusb_padctl_suspend_noirq+0x80/0x100 [ 153.601632] sp : ffff8000120dbb60 [ 153.604999] x29: ffff8000120dbb60 x28: ffff000080a1df00 [ 153.610430] x27: 0000000000000002 x26: ffff8000106f8540 [ 153.615858] x25: ffff8000113ac4a4 x24: ffff80001148c198 [ 153.621277] x23: ffff800010c4538c x22: 0000000000000002 [ 153.626692] x21: ffff800010ccde80 x20: ffff0000829f6480 [ 153.632107] x19: ffff000080917000 x18: 0000000000000030 [ 153.637521] x17: 0000000000000000 x16: 0000000000000000 [ 153.642933] x15: ffff000080a1e380 x14: 74636461702d6273 [ 153.648346] x13: ffff8000113ad058 x12: 0000000000000f39 [ 153.653759] x11: 0000000000000513 x10: ffff800011405058 [ 153.659176] x9 : 00000000fffff000 x8 : ffff8000113ad058 [ 153.664590] x7 : ffff800011405058 x6 : 0000000000000000 [ 153.670002] x5 : 0000000000000000 x4 : ffff0000fe908bc0 [ 153.675414] x3 : ffff0000fe910228 x2 : 162ef67e0581e700 [ 153.680826] x1 : 162ef67e0581e700 x0 : ef7bdd7fffffffff [ 153.686241] Call trace: [ 153.688769] tegra_xusb_padctl_suspend_noirq+0x88/0x100 [ 153.694077] __device_suspend_noirq+0x68/0x1cc [ 153.698594] dpm_noirq_suspend_devices+0x10c/0x1d0 [ 153.703456] dpm_suspend_noirq+0x28/0xa0 [ 153.707461] suspend_devices_and_enter+0x234/0x4bc [ 153.712314] pm_suspend+0x1e4/0x270 [ 153.715868] state_store+0x8c/0x110 [ 153.719440] kobj_attr_store+0x1c/0x30 [ 153.723259] sysfs_kf_write+0x4c/0x7c [ 153.726981] kernfs_fop_write+0x124/0x240 [ 153.731065] vfs_write+0xe4/0x204 [ 153.734449] ksys_write+0x6c/0x100 [ 153.737925] __arm64_sys_write+0x20/0x30 [ 153.741931] el0_svc_common.constprop.0+0x78/0x1a0 [ 153.746789] do_el0_svc+0x24/0x90 [ 153.750181] el0_sync_handler+0x254/0x260 [ 153.754251] el0_sync+0x174/0x180 [ 153.757663] Code: aa0303e2 94000f64 f9405680 b40000e0 (f9402803) [ 153.763826] ---[ end trace 81543a3394cb409d ]--- Fixes: e8f7d2f409a1 ("phy: tegra: xusb: Add usb-phy support") Signed-off-by: JC Kuo <jckuo@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Link: https://lore.kernel.org/r/20201117083803.185209-1-jckuo@nvidia.com Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-11-16phy: mediatek: fix spelling mistake in Kconfig "veriosn" -> "version"Colin Ian King1-1/+1
There is a spelling mistake in the Kconfig. Fix it. Signed-off-by: Colin Ian King <colin.king@canonical.com> Link: https://lore.kernel.org/r/20201114120518.416120-1-colin.king@canonical.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-16phy: qualcomm: Fix 28 nm Hi-Speed USB PHY OF dependencyBryan O'Donoghue1-1/+1
This Kconfig entry should declare a dependency on OF Fixes: 67b27dbeac4d ("phy: qualcomm: Add Synopsys 28nm Hi-Speed USB PHY driver") Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> Link: https://lore.kernel.org/r/20201113151225.1657600-3-bryan.odonoghue@linaro.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-16phy: qualcomm: usb: Fix SuperSpeed PHY OF dependencyBryan O'Donoghue1-1/+1
This Kconfig entry should declare a dependency on OF Fixes: 6076967a500c ("phy: qualcomm: usb: Add SuperSpeed PHY driver") Reported-by: kernel test robot <lkp@intel.com> Link: https://lkml.org/lkml/2020/11/13/414 Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> Link: https://lore.kernel.org/r/20201113151225.1657600-2-bryan.odonoghue@linaro.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-16phy: intel: PHY_INTEL_KEEMBAY_EMMC should depend on ARCH_KEEMBAYGeert Uytterhoeven1-1/+1
The Intel Keem Bay eMMC PHY is only present on Intel Keem Bay SoCs. Hence add a dependency on ARCH_KEEMBAY, to prevent asking the user about this driver when configuring a kernel without Intel Keem Bay platform support. Fixes: 885c4f4d6cf448f6 ("phy: intel: Add Keem Bay eMMC PHY support") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20201110144600.3279752-1-geert+renesas@glider.be Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-10-28phy: cpcap-usb: Use IRQF_ONESHOTZou Wei1-1/+2
Fixes coccicheck error: ./drivers/phy/motorola/phy-cpcap-usb.c:365:9-34: ERROR: Threaded IRQ with no primary handler requested without IRQF_ONESHOT Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Zou Wei <zou_wei@huawei.com> Link: https://lore.kernel.org/r/1603875549-107500-1-git-send-email-zou_wei@huawei.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-10-28phy: qcom-qmp: Initialize another pointer to NULLStephen Boyd1-1/+1
This probe function is too complicated and should be refactored. For now let's just set this variable to NULL and keep the static analysis tools happy. Fixes: 52e013d0bffa ("phy: qcom-qmp: Add support for DP in USB3+DP combo phy") Reported-by: kernel test robot <lkp@intel.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Stephen Boyd <swboyd@chromium.org> Link: https://lore.kernel.org/r/20201026205942.2861828-1-swboyd@chromium.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-10-28phy: tegra: xusb: Fix dangling pointer on probe failureMarc Zyngier1-0/+1
If, for some reason, the xusb PHY fails to probe, it leaves a dangling pointer attached to the platform device structure. This would normally be harmless, but the Tegra XHCI driver then goes and extract that pointer from the PHY device. Things go downhill from there: 8.752082] [004d554e5145533c] address between user and kernel address ranges [ 8.752085] Internal error: Oops: 96000004 [#1] PREEMPT SMP [ 8.752088] Modules linked in: max77620_regulator(E+) xhci_tegra(E+) sdhci_tegra(E+) xhci_hcd(E) sdhci_pltfm(E) cqhci(E) fixed(E) usbcore(E) scsi_mod(E) sdhci(E) host1x(E+) [ 8.752103] CPU: 4 PID: 158 Comm: systemd-udevd Tainted: G S W E 5.9.0-rc7-00298-gf6337624c4fe #1980 [ 8.752105] Hardware name: NVIDIA Jetson TX2 Developer Kit (DT) [ 8.752108] pstate: 20000005 (nzCv daif -PAN -UAO BTYPE=--) [ 8.752115] pc : kobject_put+0x1c/0x21c [ 8.752120] lr : put_device+0x20/0x30 [ 8.752121] sp : ffffffc012eb3840 [ 8.752122] x29: ffffffc012eb3840 x28: ffffffc010e82638 [ 8.752125] x27: ffffffc008d56440 x26: 0000000000000000 [ 8.752128] x25: ffffff81eb508200 x24: 0000000000000000 [ 8.752130] x23: ffffff81eb538800 x22: 0000000000000000 [ 8.752132] x21: 00000000fffffdfb x20: ffffff81eb538810 [ 8.752134] x19: 3d4d554e51455300 x18: 0000000000000020 [ 8.752136] x17: ffffffc008d00270 x16: ffffffc008d00c94 [ 8.752138] x15: 0000000000000004 x14: ffffff81ebd4ae90 [ 8.752140] x13: 0000000000000000 x12: ffffff81eb86a4e8 [ 8.752142] x11: ffffff81eb86a480 x10: ffffff81eb862fea [ 8.752144] x9 : ffffffc01055fb28 x8 : ffffff81eb86a4a8 [ 8.752146] x7 : 0000000000000001 x6 : 0000000000000001 [ 8.752148] x5 : ffffff81dff8bc38 x4 : 0000000000000000 [ 8.752150] x3 : 0000000000000001 x2 : 0000000000000001 [ 8.752152] x1 : 0000000000000002 x0 : 3d4d554e51455300 [ 8.752155] Call trace: [ 8.752157] kobject_put+0x1c/0x21c [ 8.752160] put_device+0x20/0x30 [ 8.752164] tegra_xusb_padctl_put+0x24/0x3c [ 8.752170] tegra_xusb_probe+0x8b0/0xd10 [xhci_tegra] [ 8.752174] platform_drv_probe+0x60/0xb4 [ 8.752176] really_probe+0xf0/0x504 [ 8.752179] driver_probe_device+0x100/0x170 [ 8.752181] device_driver_attach+0xcc/0xd4 [ 8.752183] __driver_attach+0xb0/0x17c [ 8.752185] bus_for_each_dev+0x7c/0xd4 [ 8.752187] driver_attach+0x30/0x3c [ 8.752189] bus_add_driver+0x154/0x250 [ 8.752191] driver_register+0x84/0x140 [ 8.752193] __platform_driver_register+0x54/0x60 [ 8.752197] tegra_xusb_init+0x40/0x1000 [xhci_tegra] [ 8.752201] do_one_initcall+0x54/0x2d0 [ 8.752205] do_init_module+0x68/0x29c [ 8.752207] load_module+0x2178/0x26c0 [ 8.752209] __do_sys_finit_module+0xb0/0x120 [ 8.752211] __arm64_sys_finit_module+0x2c/0x40 [ 8.752215] el0_svc_common.constprop.0+0x80/0x240 [ 8.752218] do_el0_svc+0x30/0xa0 [ 8.752220] el0_svc+0x18/0x50 [ 8.752223] el0_sync_handler+0x90/0x318 [ 8.752225] el0_sync+0x158/0x180 [ 8.752230] Code: a9bd7bfd 910003fd a90153f3 aa0003f3 (3940f000) [ 8.752232] ---[ end trace 90f6c89d62d85ff5 ]--- Reset the pointer on probe failure fixes the issue. Fixes: 53d2a715c2403 ("phy: Add Tegra XUSB pad controller support") Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20201013095820.311376-1-maz@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-10-28phy: usb: Fix incorrect clearing of tca_drv_sel bit in SETUP reg for 7211Al Cooper1-5/+0
The 7211a0 has a tca_drv_sel bit in the USB SETUP register that should never be enabled. This feature is only used if there is a USB Type-C PHY, and the 7211 does not have one. If the bit is enabled, the VBUS signal will never be asserted. In the 7211a0, the bit was incorrectly defaulted to on so the driver had to clear the bit. In the 7211c0 the state was inverted so the driver should no longer clear the bit. This hasn't been a problem because all current 7211 boards don't use the VBUS signal, but there are some future customer boards that may use it. Signed-off-by: Al Cooper <alcooperx@gmail.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Link: https://lore.kernel.org/r/20201002190115.48017-1-alcooperx@gmail.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-10-22Merge tag 'pci-v5.10-changes' of ↵Linus Torvalds2-6/+22
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI updates from Bjorn Helgaas: "Enumeration: - Print IRQ number used by PCIe Link Bandwidth Notification (Dongdong Liu) - Add schedule point in pci_read_config() to reduce max latency (Jiang Biao) - Add Kconfig options for MPS/MRRS strategy (Jim Quinlan) Resource management: - Fix pci_iounmap() memory leak when !CONFIG_GENERIC_IOMAP (Lorenzo Pieralisi) PCIe native device hotplug: - Reduce noisiness on hot removal (Lukas Wunner) Power management: - Revert "PCI/PM: Apply D2 delay as milliseconds, not microseconds" that was done on the basis of spec typo (Bjorn Helgaas) - Rename pci_dev.d3_delay to d3hot_delay to remove D3hot/D3cold ambiguity (Krzysztof Wilczyński) - Remove unused pcibios_pm_ops (Vaibhav Gupta) IOMMU: - Enable Translation Blocking for external devices to harden against DMA attacks (Rajat Jain) Error handling: - Add an ACPI APEI notifier chain for vendor CPER records to enable device-specific error handling (Shiju Jose) ASPM: - Remove struct aspm_register_info to simplify code (Saheed O. Bolarinwa) Amlogic Meson PCIe controller driver: - Build as module by default (Kevin Hilman) Ampere Altra PCIe controller driver: - Add MCFG quirk to work around non-standard ECAM implementation (Tuan Phan) Broadcom iProc PCIe controller driver: - Set affinity mask on MSI interrupts (Mark Tomlinson) Broadcom STB PCIe controller driver: - Make PCIE_BRCMSTB depend on ARCH_BRCMSTB (Jim Quinlan) - Add DT bindings for more Brcmstb chips (Jim Quinlan) - Add bcm7278 register info (Jim Quinlan) - Add bcm7278 PERST# support (Jim Quinlan) - Add suspend and resume pm_ops (Jim Quinlan) - Add control of rescal reset (Jim Quinlan) - Set additional internal memory DMA viewport sizes (Jim Quinlan) - Accommodate MSI for older chips (Jim Quinlan) - Set bus max burst size by chip type (Jim Quinlan) - Add support for bcm7211, bcm7216, bcm7445, bcm7278 (Jim Quinlan) Freescale i.MX6 PCIe controller driver: - Use dev_err_probe() to reduce redundant messages (Anson Huang) Freescale Layerscape PCIe controller driver: - Enforce 4K DMA buffer alignment in endpoint test (Hou Zhiqiang) - Add DT compatible strings for ls1088a, ls2088a (Xiaowei Bao) - Add endpoint support for ls1088a, ls2088a (Xiaowei Bao) - Add endpoint test support for lS1088a (Xiaowei Bao) - Add MSI-X support for ls1088a (Xiaowei Bao) HiSilicon HIP PCIe controller driver: - Handle HIP-specific errors via ACPI APEI (Yicong Yang) HiSilicon Kirin PCIe controller driver: - Return -EPROBE_DEFER if the GPIO isn't ready (Bean Huo) Intel VMD host bridge driver: - Factor out physical offset, bus offset, IRQ domain, IRQ allocation (Jon Derrick) - Use generic PCI PM correctly (Jon Derrick) Marvell Aardvark PCIe controller driver: - Fix compilation on s390 (Pali Rohár) - Implement driver 'remove' function and allow to build it as module (Pali Rohár) - Move PCIe reset card code to advk_pcie_train_link() (Pali Rohár) - Convert mvebu a3700 internal SMCC firmware return codes to errno (Pali Rohár) - Fix initialization with old Marvell's Arm Trusted Firmware (Pali Rohár) Microsoft Hyper-V host bridge driver: - Fix hibernation in case interrupts are not re-created (Dexuan Cui) NVIDIA Tegra PCIe controller driver: - Stop checking return value of debugfs_create() functions (Greg Kroah-Hartman) - Convert to use DEFINE_SEQ_ATTRIBUTE macro (Liu Shixin) Qualcomm PCIe controller driver: - Reset PCIe to work around Qsdk U-Boot issue (Ansuel Smith) Renesas R-Car PCIe controller driver: - Add DT documentation for r8a774a1, r8a774b1, r8a774e1 endpoints (Lad Prabhakar) - Add RZ/G2M, RZ/G2N, RZ/G2H IDs to endpoint test (Lad Prabhakar) - Add DT support for r8a7742 (Lad Prabhakar) Socionext UniPhier Pro5 controller driver: - Add DT descriptions of iATU register (host and endpoint) (Kunihiko Hayashi) Synopsys DesignWare PCIe controller driver: - Add link up check in dw_child_pcie_ops.map_bus() (racy, but seems unavoidable) (Hou Zhiqiang) - Fix endpoint Header Type check so multi-function devices work (Hou Zhiqiang) - Skip PCIE_MSI_INTR0* programming if MSI is disabled (Jisheng Zhang) - Stop leaking MSI page in suspend/resume (Jisheng Zhang) - Add common iATU register support instead of keystone-specific code (Kunihiko Hayashi) - Major config space access and other cleanups in dwc core and drivers that use it (al, exynos, histb, imx6, intel-gw, keystone, kirin, meson, qcom, tegra) (Rob Herring) - Add multiple PFs support for endpoint (Xiaowei Bao) - Add MSI-X doorbell mode in endpoint mode (Xiaowei Bao) Miscellaneous: - Use fallthrough pseudo-keyword (Gustavo A. R. Silva) - Fix "0 used as NULL pointer" warnings (Gustavo Pimentel) - Fix "cast truncates bits from constant value" warnings (Gustavo Pimentel) - Remove redundant zeroing for sg_init_table() (Julia Lawall) - Use scnprintf(), not snprintf(), in sysfs "show" functions (Krzysztof Wilczyński) - Remove unused assignments (Krzysztof Wilczyński) - Fix "0 used as NULL pointer" warning (Krzysztof Wilczyński) - Simplify bool comparisons (Krzysztof Wilczyński) - Use for_each_child_of_node() and for_each_node_by_name() (Qinglang Miao) - Simplify return expressions (Qinglang Miao)" * tag 'pci-v5.10-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (147 commits) PCI: vmd: Update VMD PM to correctly use generic PCI PM PCI: vmd: Create IRQ allocation helper PCI: vmd: Create IRQ Domain configuration helper PCI: vmd: Create bus offset configuration helper PCI: vmd: Create physical offset helper PCI: v3-semi: Remove unneeded break PCI: dwc: Add link up check in dw_child_pcie_ops.map_bus() PCI/ASPM: Remove struct pcie_link_state.l1ss PCI/ASPM: Remove struct aspm_register_info.l1ss_cap PCI/ASPM: Pass L1SS Capabilities value, not struct aspm_register_info PCI/ASPM: Remove struct aspm_register_info.l1ss_ctl1 PCI/ASPM: Remove struct aspm_register_info.l1ss_ctl2 (unused) PCI/ASPM: Remove struct aspm_register_info.l1ss_cap_ptr PCI/ASPM: Remove struct aspm_register_info.latency_encoding PCI/ASPM: Remove struct aspm_register_info.enabled PCI/ASPM: Remove struct aspm_register_info.support PCI/ASPM: Use 'parent' and 'child' for readability PCI/ASPM: Move LTR path check to where it's used PCI/ASPM: Move pci_clear_and_set_dword() earlier PCI: dwc: Fix MSI page leakage in suspend/resume ...
2020-10-15Merge tag 'drm-next-2020-10-15' of git://anongit.freedesktop.org/drm/drmLinus Torvalds6-0/+813
Pull drm updates from Dave Airlie: "Not a major amount of change, the i915 trees got split into display and gt trees to better facilitate higher level review, and there's a major refactoring of i915 GEM locking to use more core kernel concepts (like ww-mutexes). msm gets per-process pagetables, older AMD SI cards get DC support, nouveau got a bump in displayport support with common code extraction from i915. Outside of drm this contains a couple of patches for hexint moduleparams which you've acked, and a virtio common code tree that you should also get via it's regular path. New driver: - Cadence MHDP8546 DisplayPort bridge driver core: - cross-driver scatterlist cleanups - devm_drm conversions - remove drm_dev_init - devm_drm_dev_alloc conversion ttm: - lots of refactoring and cleanups bridges: - chained bridge support in more drivers panel: - misc new panels scheduler: - cleanup priority levels displayport: - refactor i915 code into helpers for nouveau i915: - split into display and GT trees - WW locking refactoring in GEM - execbuf2 extension mechanism - syncobj timeline support - GEN 12 HOBL display powersaving - Rocket Lake display additions - Disable FBC on Tigerlake - Tigerlake Type-C + DP improvements - Hotplug interrupt refactoring amdgpu: - Sienna Cichlid updates - Navy Flounder updates - DCE6 (SI) support for DC - Plane rotation enabled - TMZ state info ioctl - PCIe DPC recovery support - DC interrupt handling refactor - OLED panel fixes amdkfd: - add SMI events for thermal throttling - SMI interface events ioctl update - process eviction counters radeon: - move to dma_ for allocations - expose sclk via sysfs msm: - DSI support for sm8150/sm8250 - per-process GPU pagetable support - Displayport support mediatek: - move HDMI phy driver to PHY - convert mtk-dpi to bridge API - disable mt2701 tmds tegra: - bridge support exynos: - misc cleanups vc4: - dual display cleanups ast: - cleanups gma500: - conversion to GPIOd API hisilicon: - misc reworks ingenic: - clock handling and format improvements mcde: - DSI support mgag200: - desktop g200 support mxsfb: - i.MX7 + i.MX8M - alpha plane support panfrost: - devfreq support - amlogic SoC support ps8640: - EDID from eDP retrieval tidss: - AM65xx YUV workaround virtio: - virtio-gpu exported resources rcar-du: - R8A7742, R8A774E1 and R8A77961 support - YUV planar format fixes - non-visible plane handling - VSP device reference count fix - Kconfig fix to avoid displaying disabled options in .config" * tag 'drm-next-2020-10-15' of git://anongit.freedesktop.org/drm/drm: (1494 commits) drm/ingenic: Fix bad revert drm/amdgpu: Fix invalid number of character '{' in amdgpu_acpi_init drm/amdgpu: Remove warning for virtual_display drm/amdgpu: kfd_initialized can be static drm/amd/pm: setup APU dpm clock table in SMU HW initialization drm/amdgpu: prevent spurious warning drm/amdgpu/swsmu: fix ARC build errors drm/amd/display: Fix OPTC_DATA_FORMAT programming drm/amd/display: Don't allow pstate if no support in blank drm/panfrost: increase readl_relaxed_poll_timeout values MAINTAINERS: Update entry for st7703 driver after the rename Revert "gpu/drm: ingenic: Add option to mmap GEM buffers cached" drm/amd/display: HDMI remote sink need mode validation for Linux drm/amd/display: Change to correct unit on audio rate drm/amd/display: Avoid set zero in the requested clk drm/amdgpu: align frag_end to covered address space drm/amdgpu: fix NULL pointer dereference for Renoir drm/vmwgfx: fix regression in thp code due to ttm init refactor. drm/amdgpu/swsmu: add interrupt work handler for smu11 parts drm/amdgpu/swsmu: add interrupt work function ...
2020-10-05Merge 5.9-rc8 into usb-nextGreg Kroah-Hartman1-2/+4
We need the USB fixes in here as well for testing. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-02phy: marvell: comphy: Convert internal SMCC firmware return codes to errnoPali Rohár2-6/+22
Driver ->power_on and ->power_off callbacks leaks internal SMCC firmware return codes to phy caller. This patch converts SMCC error codes to standard linux errno codes. Include file linux/arm-smccc.h already provides defines for SMCC error codes, so use them instead of custom driver defines. Note that return value is signed 32bit, but stored in unsigned long type with zero padding. Tested-by: Tomasz Maciej Nowak <tmn505@gmail.com> Link: https://lore.kernel.org/r/20200902144344.16684-2-pali@kernel.org Signed-off-by: Pali Rohár <pali@kernel.org> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Rob Herring <robh@kernel.org>
2020-10-02Merge tag 'phy-for-5.10' of ↵Greg Kroah-Hartman37-617/+4832
git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy into usb-next Vinod writes: phy for 5.9 - Core: - New PHY attribute for max_link_rate - New phy drivers: - Rockchip dphy driver moved from staging - Socionext UniPhier AHCI PHY driver - Intel LGM SoC USB phy - Intel Keem Bay eMMC PHY driver - Updates: - Support for imx8mp usb phy - Support for DP Phy and USB3+DP combo phy in QMP driver - Support for Qualcomm sc7180 DP phy - Support for cadence torrent PCIe and USB single linke and multilink configurations along with USB, SGMII/QSGMII configurations * tag 'phy-for-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy: (72 commits) phy: qcom-qmp: initialize the pointer to NULL phy: qcom-qmp: Add support for sc7180 DP phy phy: qcom-qmp: Add support for DP in USB3+DP combo phy phy: qcom-qmp: Use devm_platform_ioremap_resource() to simplify phy: qcom-qmp: Get dp_com I/O resource by index phy: qcom-qmp: Move 'serdes' and 'cfg' into 'struct qcom_phy' phy: qcom-qmp: Remove 'initialized' in favor of 'init_count' phy: qcom-qmp: Move phy mode into struct qmp_phy dt-bindings: phy: qcom,qmp-usb3-dp: Add DP phy information dt-bindings: phy: ti,phy-j721e-wiz: fix bindings for torrent phy dt-bindings: phy: cdns,torrent-phy: add reset-names phy: rockchip-dphy-rx0: Include linux/delay.h phy: fix USB_LGM_PHY warning & build errors phy: cadence-torrent: Add USB + SGMII/QSGMII multilink configuration phy: cadence-torrent: Add PCIe + USB multilink configuration phy: cadence-torrent: Add single link USB register sequences phy: cadence-torrent: Add single link SGMII/QSGMII register sequences phy: cadence-torrent: Configure PHY_PLL_CFG as part of link_cmn_vals phy: cadence-torrent: Add PHY link configuration sequences for single link phy: cadence-torrent: Add clk changes for multilink configuration ...
2020-10-01phy: qcom-qmp: initialize the pointer to NULLVinod Koul1-3/+3
Smatch complains: drivers/phy/qualcomm/phy-qcom-qmp.c:3899 qcom_qmp_phy_probe() error: uninitialized symbol 'dp_cfg'. drivers/phy/qualcomm/phy-qcom-qmp.c:3900 qcom_qmp_phy_probe() error: uninitialized symbol 'dp_serdes'. drivers/phy/qualcomm/phy-qcom-qmp.c:3902 qcom_qmp_phy_probe() error: uninitialized symbol 'usb_cfg'. This is a warning but not a practical one as dp_cfg, dp_serdes and usb_cfg will be set and used when valid. So we can set the pointers to NULL to quiesce the warnings. Fixes: 52e013d0bffa ("phy: qcom-qmp: Add support for DP in USB3+DP combo phy") Reported-by: kernel test robot <lkp@intel.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Stephen Boyd <swboyd@chromium.org> Link: https://lore.kernel.org/r/20201001070911.140019-1-vkoul@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-09-29Merge tag 'phy-fixes-2-5.9' of ↵Greg Kroah-Hartman1-2/+4
git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy into usb-linus Vinod writes: phy: Second round of fixes for 5.9 *) Fix of leak in TI phy driver * tag 'phy-fixes-2-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy: phy: ti: am654: Fix a leak in serdes_am654_probe()
2020-09-29Merge tag 'mediatek-drm-next-5.10' of ↵Dave Airlie6-0/+813
https://git.kernel.org/pub/scm/linux/kernel/git/chunkuang.hu/linux into drm-next Mediatek DRM Next for Linux 5.10 1. Move Mediatek HDMI PHY driver from DRM folder to PHY folder 2. Convert mtk-dpi to drm_bridge API 3. Disable tmds on mt2701 Signed-off-by: Dave Airlie <airlied@redhat.com> From: Chun-Kuang Hu <chunkuang.hu@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200914231227.30500-1-chunkuang.hu@kernel.org
2020-09-28phy: qcom-qmp: Add support for sc7180 DP phyStephen Boyd1-0/+124
Add the necessary compatible strings and phy data for the sc7180 USB3+DP combo phy. Signed-off-by: Stephen Boyd <swboyd@chromium.org> Cc: Jeykumar Sankaran <jsanka@codeaurora.org> Cc: Chandan Uddaraju <chandanu@codeaurora.org> Cc: Vara Reddy <varar@codeaurora.org> Cc: Tanmay Shah <tanmay@codeaurora.org> Cc: Bjorn Andersson <bjorn.andersson@linaro.org> Cc: Manu Gautam <mgautam@codeaurora.org> Cc: Sandeep Maheswaram <sanm@codeaurora.org> Cc: Douglas Anderson <dianders@chromium.org> Cc: Sean Paul <seanpaul@chromium.org> Cc: Jonathan Marek <jonathan@marek.ca> Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Cc: Rob Clark <robdclark@chromium.org> Link: https://lore.kernel.org/r/20200609034623.10844-1-tanmay@codeaurora.org Link: https://lore.kernel.org/r/20200916231202.3637932-9-swboyd@chromium.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-09-28phy: qcom-qmp: Add support for DP in USB3+DP combo phyStephen Boyd2-90/+775
Add support for the USB3 + DisplayPort (DP) "combo" phy to the qmp phy driver. We already have support for the USB3 part of the combo phy, so most additions are for the DP phy. Split up the qcom_qmp_phy{enable,disable}() functions into the phy init, power on, power off, and exit functions that the common phy framework expects so that the DP phy can add even more phy ops like phy_calibrate() and phy_configure(). This allows us to initialize the DP PHY and configure the AUX channel before powering on the PHY at the link rate that was negotiated during link training. The general design is as follows: 1) DP controller calls phy_init() to initialize the PHY and configure the dp_com register region. 2) DP controller calls phy_configure() to tune the link rate and voltage swing and pre-emphasis settings. 3) DP controller calls phy_power_on() to enable the PLL and power on the phy. 4) DP controller calls phy_configure() again to tune the voltage swing and pre-emphasis settings determind during link training. 5) DP controller calls phy_calibrate() some number of times to change the aux settings if the aux channel times out during link training. 6) DP controller calls phy_power_off() if the link rate is to be changed and goes back to step 2 to try again at a different link rate. 5) DP controller calls phy_power_off() and then phy_exit() to power down the PHY when it is done. The DP PHY contains a PLL that is different from the one used for the USB3 PHY. Instead of a pipe clk there is a link clk and a pixel clk output from the DP PLL after going through various dividers. Introduce clk ops for these two clks that just tell the child clks what the frequency of the pixel and link are. When the phy link rate is configured we call clk_set_rate() to update the child clks in the display clk controller on what rate is in use. The clk frequencies always differ based on the link rate (i.e. 1.6Gb/s 2.7Gb/s, 5.4Gb/s, or 8.1Gb/s corresponding to various transmission modes like HBR1, HBR2 or HBR3) so we simply store the link rate and use that to calculate the clk frequencies. The PLL enable sequence is a little different from other QMP phy PLLs so we power on the PLL in qcom_qmp_phy_configure_dp_phy() that gets called from phy_power_on(). This should probably be split out better so that each phy has a way to run the final PLL/PHY enable sequence. This code is based on a submission of this phy and PLL in the drm subsystem. Signed-off-by: Stephen Boyd <swboyd@chromium.org> Cc: Jeykumar Sankaran <jsanka@codeaurora.org> Cc: Chandan Uddaraju <chandanu@codeaurora.org> Cc: Vara Reddy <varar@codeaurora.org> Cc: Tanmay Shah <tanmay@codeaurora.org> Cc: Bjorn Andersson <bjorn.andersson@linaro.org> Cc: Manu Gautam <mgautam@codeaurora.org> Cc: Sandeep Maheswaram <sanm@codeaurora.org> Cc: Douglas Anderson <dianders@chromium.org> Cc: Sean Paul <seanpaul@chromium.org> Cc: Stephen Boyd <sboyd@kernel.org> Cc: Jonathan Marek <jonathan@marek.ca> Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Cc: Rob Clark <robdclark@chromium.org> Link: https://lore.kernel.org/r/20200609034623.10844-1-tanmay@codeaurora.org Link: https://lore.kernel.org/r/20200916231202.3637932-8-swboyd@chromium.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-09-28phy: qcom-qmp: Use devm_platform_ioremap_resource() to simplifyStephen Boyd1-8/+3
We can use the wrapper API here to save some lines and remove the need for the 'base' and 'res' local variable. Suggested-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Stephen Boyd <swboyd@chromium.org> Cc: Jeykumar Sankaran <jsanka@codeaurora.org> Cc: Chandan Uddaraju <chandanu@codeaurora.org> Cc: Vara Reddy <varar@codeaurora.org> Cc: Tanmay Shah <tanmay@codeaurora.org> Cc: Bjorn Andersson <bjorn.andersson@linaro.org> Cc: Manu Gautam <mgautam@codeaurora.org> Cc: Sandeep Maheswaram <sanm@codeaurora.org> Cc: Douglas Anderson <dianders@chromium.org> Cc: Sean Paul <seanpaul@chromium.org> Cc: Jonathan Marek <jonathan@marek.ca> Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Cc: Rob Clark <robdclark@chromium.org> Link: https://lore.kernel.org/r/20200916231202.3637932-7-swboyd@chromium.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-09-28phy: qcom-qmp: Get dp_com I/O resource by indexStephen Boyd1-7/+3
The dp_com resource is always at index 1 according to the dts files in the kernel. Get this resource by index so that we don't need to make future additions to the DT binding use 'reg-names'. Signed-off-by: Stephen Boyd <swboyd@chromium.org> Cc: Jeykumar Sankaran <jsanka@codeaurora.org> Cc: Chandan Uddaraju <chandanu@codeaurora.org> Cc: Vara Reddy <varar@codeaurora.org> Cc: Tanmay Shah <tanmay@codeaurora.org> Cc: Bjorn Andersson <bjorn.andersson@linaro.org> Cc: Manu Gautam <mgautam@codeaurora.org> Cc: Sandeep Maheswaram <sanm@codeaurora.org> Cc: Douglas Anderson <dianders@chromium.org> Cc: Sean Paul <seanpaul@chromium.org> Cc: Jonathan Marek <jonathan@marek.ca> Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Cc: Rob Clark <robdclark@chromium.org> Link: https://lore.kernel.org/r/20200916231202.3637932-6-swboyd@chromium.org Signed-off-by: Vinod Koul <vkoul@kernel.org>