diff mbox series

[01/13] phy: qcom-qmp-usb: fix sc8280xp PCS_USB offset

Message ID 20221024100632.20549-2-johan+linaro@kernel.org
State New
Headers
Series phy: qcom-qmp-usb: fix sc8280xp binding |

Commit Message

Johan Hovold Oct. 24, 2022, 10:06 a.m. UTC 
  The PCS_USB register block lives at an offset of 0x1000 from the PCS
region on SC8280XP so add the missing offset to avoid corrupting
unrelated registers on runtime suspend.

Note that the current binding is broken as it does not describe the
PCS_USB region and the PCS register size does not cover PCS_USB and the
regions in between. As Linux currently maps full pages, simply adding
the offset to driver works until the binding has been fixed.

Fixes: c0c7769cdae2 ("phy: qcom-qmp: Add SC8280XP USB3 UNI phy")
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 1 +
 1 file changed, 1 insertion(+)

Comments

Dmitry Baryshkov Oct. 24, 2022, 1:32 p.m. UTC | #1 
On 24/10/2022 13:06, Johan Hovold wrote:
> The PCS_USB register block lives at an offset of 0x1000 from the PCS
> region on SC8280XP so add the missing offset to avoid corrupting
> unrelated registers on runtime suspend.
> 
> Note that the current binding is broken as it does not describe the
> PCS_USB region and the PCS register size does not cover PCS_USB and the
> regions in between. As Linux currently maps full pages, simply adding
> the offset to driver works until the binding has been fixed.
> 
> Fixes: c0c7769cdae2 ("phy: qcom-qmp: Add SC8280XP USB3 UNI phy")
> Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
> ---
>   drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 1 +
>   1 file changed, 1 insertion(+)

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
diff mbox series

Patch

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
index d0c433197080..82af28f4a91b 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
@@ -1682,6 +1682,7 @@  static const struct qmp_phy_cfg sc8280xp_usb3_uniphy_cfg = {
 	.vreg_list		= qmp_phy_vreg_l,
 	.num_vregs		= ARRAY_SIZE(qmp_phy_vreg_l),
 	.regs			= qmp_v4_usb3phy_regs_layout,
+	.pcs_usb_offset		= 0x1000,
 };
 
 static const struct qmp_phy_cfg qmp_v3_usb3_uniphy_cfg = {