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 2/2] clk: qcom: gcc-msm8996: Update the .pwrsts for usb gdsc
Date:   Fri,  3 Mar 2023 03:29:12 +0100
Message-Id: <20230303022912.2171177-2-konrad.dybcio@linaro.org>
In-Reply-To: <20230303022912.2171177-1-konrad.dybcio@linaro.org>
References: <20230303022912.2171177-1-konrad.dybcio@linaro.org>
MIME-Version: 1.0
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The USB controller on MSM8996 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-msm8996.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/qcom/gcc-msm8996.c b/drivers/clk/qcom/gcc-msm8996.c
index e16163706735..e068c9e51441 100644
--- a/drivers/clk/qcom/gcc-msm8996.c
+++ b/drivers/clk/qcom/gcc-msm8996.c
@@ -3455,7 +3455,7 @@ static struct gdsc usb30_gdsc = {
 	.pd = {
 		.name = "usb30",
 	},
-	.pwrsts = PWRSTS_OFF_ON,
+	.pwrsts = PWRSTS_RET_ON,
 };
 
 static struct gdsc pcie0_gdsc = {
-- 
2.39.2