linux-kernel - [PATCH 2/2] clk: qcom: camcc-x1e80100: Set titan_top_gdsc as the parent GDSC of subordinate GDSCs

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Date: Mon, 11 Mar 2024 00:33:26 +0000
From: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To: Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konrad.dybcio@...aro.org>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>, 
 Abel Vesa <abel.vesa@...aro.org>, Rajendra Nayak <quic_rjendra@...cinc.com>
Cc: linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Bryan O'Donoghue <bryan.odonoghue@...aro.org>
Subject: [PATCH 2/2] clk: qcom: camcc-x1e80100: Set titan_top_gdsc as the
 parent GDSC of subordinate GDSCs

The Titan TOP GDSC is the parent GDSC for all other GDSCs in the CAMCC
block. None of the subordinate blocks will switch on without the parent
GDSC switched on.

Fixes: 76126a5129b5 ("clk: qcom: Add camcc clock driver for x1e80100")
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
---
 drivers/clk/qcom/camcc-x1e80100.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/clk/qcom/camcc-x1e80100.c b/drivers/clk/qcom/camcc-x1e80100.c
index 46bb225906bff..d421da57697a2 100644
--- a/drivers/clk/qcom/camcc-x1e80100.c
+++ b/drivers/clk/qcom/camcc-x1e80100.c
@@ -2212,6 +2212,8 @@ static struct clk_branch cam_cc_sfe_0_fast_ahb_clk = {
 	},
 };
 
+static struct gdsc cam_cc_titan_top_gdsc;
+
 static struct gdsc cam_cc_bps_gdsc = {
 	.gdscr = 0x10004,
 	.en_rest_wait_val = 0x2,
@@ -2221,6 +2223,7 @@ static struct gdsc cam_cc_bps_gdsc = {
 		.name = "cam_cc_bps_gdsc",
 	},
 	.pwrsts = PWRSTS_OFF_ON,
+	.parent = &cam_cc_titan_top_gdsc.pd,
 	.flags = POLL_CFG_GDSCR | RETAIN_FF_ENABLE,
 };
 
@@ -2233,6 +2236,7 @@ static struct gdsc cam_cc_ife_0_gdsc = {
 		.name = "cam_cc_ife_0_gdsc",
 	},
 	.pwrsts = PWRSTS_OFF_ON,
+	.parent = &cam_cc_titan_top_gdsc.pd,
 	.flags = POLL_CFG_GDSCR | RETAIN_FF_ENABLE,
 };
 
@@ -2245,6 +2249,7 @@ static struct gdsc cam_cc_ife_1_gdsc = {
 		.name = "cam_cc_ife_1_gdsc",
 	},
 	.pwrsts = PWRSTS_OFF_ON,
+	.parent = &cam_cc_titan_top_gdsc.pd,
 	.flags = POLL_CFG_GDSCR | RETAIN_FF_ENABLE,
 };
 
@@ -2257,6 +2262,7 @@ static struct gdsc cam_cc_ipe_0_gdsc = {
 		.name = "cam_cc_ipe_0_gdsc",
 	},
 	.pwrsts = PWRSTS_OFF_ON,
+	.parent = &cam_cc_titan_top_gdsc.pd,
 	.flags = POLL_CFG_GDSCR | RETAIN_FF_ENABLE,
 };
 
@@ -2269,6 +2275,7 @@ static struct gdsc cam_cc_sfe_0_gdsc = {
 		.name = "cam_cc_sfe_0_gdsc",
 	},
 	.pwrsts = PWRSTS_OFF_ON,
+	.parent = &cam_cc_titan_top_gdsc.pd,
 	.flags = POLL_CFG_GDSCR | RETAIN_FF_ENABLE,
 };
 

-- 
2.43.1