linux.git/drivers/phy/mediatek, branch v6.18.21

phy: mediatek: tphy: Cleanup and document slew calibration

2025-06-26T23:33:42+00:00

While it's true that, generally, the T-PHY V3 does not support the
slew calibration process, some minor versions of it actually do,
moreover, some SoCs may not support this even though the version
of the PHY IP does.

The reference clock and rate coefficient parameters are used only
for slew calibration: move those to platform data, then document
and change the checks in hs_slew_rate_calibrate() to perform the
calibration only if:
 - EYE value was not supplied (pre-calculated calibration); and
 - Slew reference clock value is present (not zero); and
 - Slew coefficient is present (not zero).

Moreover, change the probe function to always check if both the
slew reference clock and coefficient properties are present and,
if not, assign the value from platform data (which, as reminder,
if not added means that it's zero!), instead of checking the PHY
IP version.

Signed-off-by: AngeloGioacchino Del Regno 
Reviewed-by: Neil Armstrong 
Link: https://lore.kernel.org/r/20250623120315.109881-3-angelogioacchino.delregno@collabora.com
Signed-off-by: Vinod Koul

phy: mediatek: tphy: Clarify and add kerneldoc to mtk_phy_pdata

2025-06-26T23:33:42+00:00

As struct mtk_phy_pdata was almost fully documented, transfer
the comments into kerneldoc on top.
While at it, also rewrite the comments to both improve the writing
writing and the actual information in the documentation, and add a
description for the `version` member of the structure.

Signed-off-by: AngeloGioacchino Del Regno 
Reviewed-by: Neil Armstrong 
Link: https://lore.kernel.org/r/20250623120315.109881-2-angelogioacchino.delregno@collabora.com
Signed-off-by: Vinod Koul

phy: mediatek: xsphy: support type switch by pericfg

2025-05-14T08:24:44+00:00

Patch from Sam Shih  found in MediaTek SDK
released under GPL.

Get syscon and use it to set the PHY type.
Extend support to PCIe and SGMII mode in addition to USB2 and USB3.

Signed-off-by: Daniel Golle 
Signed-off-by: Frank Wunderlich 
Reviewed-by: AngeloGioacchino Del Regno 
Link: https://lore.kernel.org/r/20250422132438.15735-7-linux@fw-web.de
Signed-off-by: Vinod Koul

phy: Use (of|device)_property_present() for non-boolean properties

2025-02-10T17:10:56+00:00

The use of (of|device)_property_read_bool() for non-boolean properties
is deprecated in favor of (of|device)_property_present() when testing
for property presence.

Signed-off-by: Rob Herring (Arm) 
Reviewed-by: AngeloGioacchino Del Regno 
Reviewed-by: Chunfeng Yun 
Link: https://lore.kernel.org/r/20241231163121.241543-1-robh@kernel.org
Signed-off-by: Vinod Koul

Merge tag 'phy-for-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy

2025-01-29T22:32:38+00:00

Pull phy updates from Vinod Koul:
 "Lots of Qualcomm and Rockchip device support.

  New Support:
   - Qualcomm SAR2130P qmp usb, SAR2130P qmp pcie, QCS615 qusb2 and
     PCIe, IPQ5424 qmp pcie, IPQ5424 QUSB2 and USB3 PHY
   - Rockchip rk3576 combo phy support

  Updates:
   - Drop Shengyang for JH7110 maintainer
   - Freescale hdmi register calculation optimization
   - Rockchip pcie phy mutex and regmap updates"

* tag 'phy-for-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy: (37 commits)
  dt-bindings: phy: qcom,qmp-pcie: document the SM8350 two lanes PCIe PHY
  phy: rockchip: phy-rockchip-typec: Fix Copyright description
  dt-bindings: phy: qcom,ipq8074-qmp-pcie: Document the IPQ5424 QMP PCIe PHYs
  phy: qcom-qusb2: Add support for QCS615
  dt-bindings: usb: qcom,dwc3: Add QCS615 to USB DWC3 bindings
  phy: core: Simplify API of_phy_simple_xlate() implementation
  phy: sun4i-usb: Remove unused of_gpio.h
  phy: HiSilicon: Don't use "proxy" headers
  phy: samsung-ufs: switch back to syscon_regmap_lookup_by_phandle()
  phy: qualcomm: qmp-pcie: add support for SAR2130P
  phy: qualcomm: qmp-pcie: define several new registers
  phy: qualcomm: qmp-pcie: split PCS_LANE1 region
  phy: qualcomm: qmp-combo: add support for SAR2130P
  dt-bindings: phy: qcom,sc8280xp-qmp-pcie-phy: Add SAR2130P compatible
  dt-bindings: phy: qcom,sc8280xp-qmp-usb43dp: Add SAR2130P compatible
  phy: freescale: fsl-samsung-hdmi: Clean up fld_tg_code calculation
  phy: freescale: fsl-samsung-hdmi: Stop searching when exact match is found
  phy: freescale: fsl-samsung-hdmi: Expand Integer divider range
  phy: rockchip-naneng-combo: add rk3576 support
  dt-bindings: phy: rockchip: add rk3576 compatible
  ...

mediatek: stop messing with ->d_iname

2025-01-15T12:14:36+00:00

use debgufs_{create_file,get}_aux_num() instead.

Signed-off-by: Al Viro 
Link: https://lore.kernel.org/r/20250112080705.141166-11-viro@zeniv.linux.org.uk
Signed-off-by: Greg Kroah-Hartman

phy: mediatek: phy-mtk-hdmi: add regulator dependency

2024-12-24T15:08:53+00:00

The driver no longer builds when regulator support is unavailable:

arm-linux-gnueabi-ld: drivers/phy/mediatek/phy-mtk-hdmi.o: in function `mtk_hdmi_phy_register_regulators':
phy-mtk-hdmi.c:(.text.unlikely+0x3e): undefined reference to `devm_regulator_register'
arm-linux-gnueabi-ld: drivers/phy/mediatek/phy-mtk-hdmi-mt8195.o: in function `mtk_hdmi_phy_pwr5v_is_enabled':
phy-mtk-hdmi-mt8195.c:(.text+0x326): undefined reference to `rdev_get_drvdata'
arm-linux-gnueabi-ld: drivers/phy/mediatek/phy-mtk-hdmi-mt8195.o: in function `mtk_hdmi_phy_pwr5v_disable':
phy-mtk-hdmi-mt8195.c:(.text+0x346): undefined reference to `rdev_get_drvdata'
arm-linux-gnueabi-ld: drivers/phy/mediatek/phy-mtk-hdmi-mt8195.o: in function `mtk_hdmi_phy_pwr5v_enable':

Fixes: 49393b2da1cd ("phy: mediatek: phy-mtk-hdmi: Register PHY provided regulator")
Signed-off-by: Arnd Bergmann 
Reviewed-by: AngeloGioacchino Del Regno 
Link: https://lore.kernel.org/r/20241213083056.2596499-1-arnd@kernel.org
Signed-off-by: Vinod Koul

phy: mediatek: phy-mtk-hdmi: Register PHY provided regulator

2024-12-04T14:25:33+00:00

At least version 2 of the HDMI PHY, found in MediaTek MT8195 and
MT8188 SoCs, does provide hardware support to switch on/off the
HDMI 5V pins (which are also used for DDC), and this translates
to this being a fixed regulator.

Register this PHY-provided regulator so that it can be fed to the
hdmi-connector driver to manage the HDMI +5V PWR rail.

Signed-off-by: AngeloGioacchino Del Regno 
Link: https://lore.kernel.org/r/20241120124143.132637-1-angelogioacchino.delregno@collabora.com
Signed-off-by: Vinod Koul

phy: mediatek: xsphy: Simplify with scoped for each OF child loop

2024-08-30T07:56:37+00:00

Use scoped for_each_child_of_node_scoped() when iterating over device
nodes to make code a bit simpler.

Signed-off-by: Krzysztof Kozlowski 
Link: https://lore.kernel.org/r/20240826-phy-of-node-scope-v1-6-5b4d82582644@linaro.org
Signed-off-by: Vinod Koul

phy: mediatek: tphy: Simplify with scoped for each OF child loop

2024-08-30T07:56:37+00:00

Use scoped for_each_child_of_node_scoped() when iterating over device
nodes to make code a bit simpler.

Signed-off-by: Krzysztof Kozlowski 
Link: https://lore.kernel.org/r/20240826-phy-of-node-scope-v1-5-5b4d82582644@linaro.org
Signed-off-by: Vinod Koul