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| author | Alexander Stein <alexander.stein@ew.tq-group.com> | 2022-09-15 08:28:53 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-10-24 09:58:27 +0200 |
| commit | 6289a58d4f198e4bf068209397c5fde0fed0611b (patch) | |
| tree | dc7e425184ec41a520e0e05df025bd4d6ecfe8dc | |
| parent | a9ccd2ab1becf5dcb6d57e9fcd981f5eaa606c96 (diff) | |
| download | linux-6289a58d4f198e4bf068209397c5fde0fed0611b.tar.gz linux-6289a58d4f198e4bf068209397c5fde0fed0611b.tar.bz2 linux-6289a58d4f198e4bf068209397c5fde0fed0611b.zip | |
usb: dwc3: core: add gfladj_refclk_lpm_sel quirk
[ Upstream commit a6fc2f1b092787e9d7dbe472d720cede81680315 ]
This selects the SOF/ITP counter be running on ref_clk. As documented
U2_FREECLK_EXISTS has to be set to 0 as well.
Reviewed-by: Li Jun <jun.li@nxp.com>
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Link: https://lore.kernel.org/r/20220915062855.751881-3-alexander.stein@ew.tq-group.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/usb/dwc3/core.c | 8 | ||||
| -rw-r--r-- | drivers/usb/dwc3/core.h | 2 |
2 files changed, 9 insertions, 1 deletions
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 2419ef828f9b..02733b6a9061 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -407,6 +407,10 @@ static void dwc3_ref_clk_period(struct dwc3 *dwc) reg |= FIELD_PREP(DWC3_GFLADJ_REFCLK_FLADJ_MASK, fladj) | FIELD_PREP(DWC3_GFLADJ_240MHZDECR, decr >> 1) | FIELD_PREP(DWC3_GFLADJ_240MHZDECR_PLS1, decr & 1); + + if (dwc->gfladj_refclk_lpm_sel) + reg |= DWC3_GFLADJ_REFCLK_LPM_SEL; + dwc3_writel(dwc->regs, DWC3_GFLADJ, reg); } @@ -788,7 +792,7 @@ static int dwc3_phy_setup(struct dwc3 *dwc) else reg |= DWC3_GUSB2PHYCFG_ENBLSLPM; - if (dwc->dis_u2_freeclk_exists_quirk) + if (dwc->dis_u2_freeclk_exists_quirk || dwc->gfladj_refclk_lpm_sel) reg &= ~DWC3_GUSB2PHYCFG_U2_FREECLK_EXISTS; dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); @@ -1490,6 +1494,8 @@ static void dwc3_get_properties(struct dwc3 *dwc) "snps,dis-tx-ipgap-linecheck-quirk"); dwc->parkmode_disable_ss_quirk = device_property_read_bool(dev, "snps,parkmode-disable-ss-quirk"); + dwc->gfladj_refclk_lpm_sel = device_property_read_bool(dev, + "snps,gfladj-refclk-lpm-sel-quirk"); dwc->tx_de_emphasis_quirk = device_property_read_bool(dev, "snps,tx_de_emphasis_quirk"); diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 81c486b3941c..725fb17e4a9e 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -390,6 +390,7 @@ #define DWC3_GFLADJ_30MHZ_SDBND_SEL BIT(7) #define DWC3_GFLADJ_30MHZ_MASK 0x3f #define DWC3_GFLADJ_REFCLK_FLADJ_MASK GENMASK(21, 8) +#define DWC3_GFLADJ_REFCLK_LPM_SEL BIT(23) #define DWC3_GFLADJ_240MHZDECR GENMASK(30, 24) #define DWC3_GFLADJ_240MHZDECR_PLS1 BIT(31) @@ -1309,6 +1310,7 @@ struct dwc3 { unsigned dis_del_phy_power_chg_quirk:1; unsigned dis_tx_ipgap_linecheck_quirk:1; unsigned parkmode_disable_ss_quirk:1; + unsigned gfladj_refclk_lpm_sel:1; unsigned tx_de_emphasis_quirk:1; unsigned tx_de_emphasis:2; |