linux-kernel - [PATCH 3/7] soc: qcom: rpmpd: Hook up VDDMX as parent of SM6375 VDDGX

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Date:   Wed, 25 Jan 2023 04:27:24 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     linux-arm-msm@...r.kernel.org, andersson@...nel.org,
        agross@...nel.org, krzysztof.kozlowski@...aro.org
Cc:     marijn.suijten@...ainline.org,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 3/7] soc: qcom: rpmpd: Hook up VDDMX as parent of SM6375 VDDGX

The GPU core clock requires that both VDDGX and VDDMX domains are scaled
at the same rate at the same time (well, MX just before GX but you get
the idea). Set MX as parent of GX to take care of that.

Suggested-by: Bjorn Andersson <andersson@...nel.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
---
 drivers/soc/qcom/rpmpd.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/soc/qcom/rpmpd.c b/drivers/soc/qcom/rpmpd.c
index 9a7da7cead9e..a69182618b76 100644
--- a/drivers/soc/qcom/rpmpd.c
+++ b/drivers/soc/qcom/rpmpd.c
@@ -1027,6 +1027,7 @@ static struct rpmpd sm6375_vddgx_ao;
 static struct rpmpd sm6375_vddgx = {
 	.pd = {	.name = "vddgx", },
 	.peer = &sm6375_vddgx_ao,
+	.parent = &sm6125_vddmx.pd,
 	.res_type = RPMPD_RWGX,
 	.res_id = 0,
 	.key = KEY_LEVEL,
@@ -1035,6 +1036,7 @@ static struct rpmpd sm6375_vddgx = {
 static struct rpmpd sm6375_vddgx_ao = {
 	.pd = {	.name = "vddgx_ao", },
 	.peer = &sm6375_vddgx,
+	.parent = &sm6125_vddmx_ao.pd,
 	.active_only = true,
 	.res_type = RPMPD_RWGX,
 	.res_id = 0,
-- 
2.39.1