From:   Konrad Dybcio <konrad.dybcio@linaro.org>
To:     linux-arm-msm@vger.kernel.org, andersson@kernel.org,
        agross@kernel.org
Cc:     marijn.suijten@somainline.org,
        Konrad Dybcio <konrad.dybcio@linaro.org>,
        Michael Turquette <mturquette@baylibre.com>,
        Stephen Boyd <sboyd@kernel.org>, linux-clk@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: [PATCH 1/2] clk: qcom: gcc-sm6375: Update the .pwrsts for usb gdsc
Date:   Fri,  3 Mar 2023 03:29:11 +0100
Message-Id: <20230303022912.2171177-1-konrad.dybcio@linaro.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

The USB controller on sm6375 doesn't retain its state when the system
goes into low power state and the GDSCs are turned off.

This can be observed by the USB connection not coming back alive after
putting the device into suspend, essentially breaking USB.

Fix this by updating the .pwrsts for the USB GDSCs so they only
transition to retention state in low power.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 drivers/clk/qcom/gcc-sm6375.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/qcom/gcc-sm6375.c b/drivers/clk/qcom/gcc-sm6375.c
index ad3c4833990d..93164670fbe1 100644
--- a/drivers/clk/qcom/gcc-sm6375.c
+++ b/drivers/clk/qcom/gcc-sm6375.c
@@ -3534,7 +3534,7 @@ static struct gdsc usb30_prim_gdsc = {
 	.pd = {
 		.name = "usb30_prim_gdsc",
 	},
-	.pwrsts = PWRSTS_OFF_ON,
+	.pwrsts = PWRSTS_RET_ON,
 };
 
 static struct gdsc ufs_phy_gdsc = {
-- 
2.39.2