linux-kernel - [PATCH 5.19 0759/1157] clk: qcom: camcc-sdm845: Fix topology around titan

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Date:   Mon, 15 Aug 2022 20:01:55 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>,
        Robert Foss <robert.foss@...aro.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.19 0759/1157] clk: qcom: camcc-sdm845: Fix topology around titan_top power domain

From: Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>

[ Upstream commit 103dd2338bbff567bce7acd00fc5a09c806b38ec ]

On SDM845 two found VFE GDSC power domains shall not be operated, if
titan top is turned off, thus the former power domains will be set as
subdomains by a GDSC registration routine.

Fixes: 78412c262004 ("clk: qcom: Add camera clock controller driver for SDM845")
Signed-off-by: Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>
Reviewed-by: Robert Foss <robert.foss@...aro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
Link: https://lore.kernel.org/r/20220519214133.1728979-2-vladimir.zapolskiy@linaro.org
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/clk/qcom/camcc-sdm845.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/clk/qcom/camcc-sdm845.c b/drivers/clk/qcom/camcc-sdm845.c
index be3f95326965..27d44188a7ab 100644
--- a/drivers/clk/qcom/camcc-sdm845.c
+++ b/drivers/clk/qcom/camcc-sdm845.c
@@ -1534,6 +1534,8 @@ static struct clk_branch cam_cc_sys_tmr_clk = {
 	},
 };
 
+static struct gdsc titan_top_gdsc;
+
 static struct gdsc bps_gdsc = {
 	.gdscr = 0x6004,
 	.pd = {
@@ -1567,6 +1569,7 @@ static struct gdsc ife_0_gdsc = {
 		.name = "ife_0_gdsc",
 	},
 	.flags = POLL_CFG_GDSCR,
+	.parent = &titan_top_gdsc.pd,
 	.pwrsts = PWRSTS_OFF_ON,
 };
 
@@ -1576,6 +1579,7 @@ static struct gdsc ife_1_gdsc = {
 		.name = "ife_1_gdsc",
 	},
 	.flags = POLL_CFG_GDSCR,
+	.parent = &titan_top_gdsc.pd,
 	.pwrsts = PWRSTS_OFF_ON,
 };
 
-- 
2.35.1