linux-kernel - [PATCH 4/4] phy: qcom-qmp: Use proper PWRDOWN offset for sm8150 USB

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Date:   Fri, 13 Mar 2020 17:54:53 -0700
From:   Wesley Cheng <wcheng@...eaurora.org>
To:     agross@...nel.org, bjorn.andersson@...aro.org, kishon@...com,
        robh+dt@...nel.org, mark.rutland@....com, p.zabel@...gutronix.de
Cc:     linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, Wesley Cheng <wcheng@...eaurora.org>
Subject: [PATCH 4/4] phy: qcom-qmp: Use proper PWRDOWN offset for sm8150 USB

The register map for SM8150 QMP USB SSPHY has moved
QPHY_POWER_DOWN_CONTROL to a different offset.  Allow for
an offset in the register table to override default value
if it is a DP capable PHY.

Signed-off-by: Wesley Cheng <wcheng@...eaurora.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c
index cc04471..71a230a 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp.c
@@ -164,6 +164,7 @@ enum qphy_reg_layout {
 	[QPHY_SW_RESET]			= 0x00,
 	[QPHY_START_CTRL]		= 0x44,
 	[QPHY_PCS_STATUS]		= 0x14,
+	[QPHY_COM_POWER_DOWN_CONTROL]	= 0x40,
 };
 
 static const unsigned int sdm845_ufsphy_regs_layout[] = {
@@ -1627,6 +1628,9 @@ static int qcom_qmp_phy_com_init(struct qmp_phy *qphy)
 	if (cfg->has_phy_com_ctrl)
 		qphy_setbits(serdes, cfg->regs[QPHY_COM_POWER_DOWN_CONTROL],
 			     SW_PWRDN);
+	else if (!cfg->has_phy_com_ctrl && cfg->regs[QPHY_COM_POWER_DOWN_CONTROL])
+		qphy_setbits(pcs, cfg->regs[QPHY_COM_POWER_DOWN_CONTROL],
+			     cfg->pwrdn_ctrl);
 	else
 		qphy_setbits(pcs, QPHY_POWER_DOWN_CONTROL, cfg->pwrdn_ctrl);
 
-- 
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a Linux Foundation Collaborative Project