linux-kernel - [PATCH 8/8] clk: qcom: gcc-sm8150: Use PWRSTS

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Date:   Thu, 27 Jan 2022 03:47:25 +0530
From:   Bhupesh Sharma <bhupesh.sharma@...aro.org>
To:     linux-arm-msm@...r.kernel.org
Cc:     bhupesh.sharma@...aro.org, bhupesh.linux@...il.com,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        robh+dt@...nel.org, agross@...nel.org, sboyd@...nel.org,
        tdas@...eaurora.org, mturquette@...libre.com,
        linux-clk@...r.kernel.org, bjorn.andersson@...aro.org,
        davem@...emloft.net, netdev@...r.kernel.org
Subject: [PATCH 8/8] clk: qcom: gcc-sm8150: Use PWRSTS_ON (only) as a workaround for emac gdsc

EMAC GDSC currently has issues (seen on SA8155p-ADP) when its
turn'ed ON, once its already in OFF state. So, use PWRSTS_ON
state (only) as a workaround for now.

Cc: Bjorn Andersson <bjorn.andersson@...aro.org>
Cc: Stephen Boyd <sboyd@...nel.org>
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@...aro.org>
---
 drivers/clk/qcom/gcc-sm8150.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/qcom/gcc-sm8150.c b/drivers/clk/qcom/gcc-sm8150.c
index 2e71afed81fd..fd7e931d3c09 100644
--- a/drivers/clk/qcom/gcc-sm8150.c
+++ b/drivers/clk/qcom/gcc-sm8150.c
@@ -3449,12 +3449,16 @@ static struct clk_branch gcc_video_xo_clk = {
 	},
 };
 
+/* To Do: EMAC GDSC currently has issues when its turn'ed ON, once
+ * its already in OFF state. So use PWRSTS_ON state (only) as a
+ * workaround for now.
+ */
 static struct gdsc emac_gdsc = {
 	.gdscr = 0x6004,
 	.pd = {
 		.name = "emac_gdsc",
 	},
-	.pwrsts = PWRSTS_OFF_ON,
+	.pwrsts = PWRSTS_ON,
 	.flags = POLL_CFG_GDSCR,
 };
 
-- 
2.34.1