diff options
| author | Alexander Stein <alexander.stein@ew.tq-group.com> | 2022-09-15 09:28:53 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-09-22 16:52:30 +0300 |
| commit | a6fc2f1b092787e9d7dbe472d720cede81680315 (patch) | |
| tree | d3a3b9be5ce860550128d8647014c97a4529c4a5 /drivers/usb | |
| parent | 206732f9a5d8bbae5a2b7f64a469f0a54e626e91 (diff) | |
| download | linux-a6fc2f1b092787e9d7dbe472d720cede81680315.tar.xz | |
usb: dwc3: core: add gfladj_refclk_lpm_sel quirk
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>
Diffstat (limited to 'drivers/usb')
| -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 1fe966d48346..eeb065e35968 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -408,6 +408,10 @@ 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); } @@ -789,7 +793,7 @@ 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); @@ -1525,6 +1529,8 @@ 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 7c9368145f37..d28c942e63dd 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -391,6 +391,7 @@ #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) @@ -1312,6 +1313,7 @@ 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; |