linux-kernel - [PATCH v2 8/9] soc: qcom: rpmpd: Hook up VDDMX as parent of SM6375 VDDGX

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Mon, 13 Feb 2023 15:35:23 +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>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 8/9] 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>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
---
 drivers/soc/qcom/rpmpd.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/soc/qcom/rpmpd.c b/drivers/soc/qcom/rpmpd.c
index 2027c820caa7..2669c9210754 100644
--- a/drivers/soc/qcom/rpmpd.c
+++ b/drivers/soc/qcom/rpmpd.c
@@ -216,11 +216,13 @@ static struct rpmpd gfx_s2b_vfc = {
 	.key = KEY_FLOOR_CORNER,
 };
 
+static struct rpmpd mx_rwmx0_lvl;
 static struct rpmpd gx_rwgx0_lvl_ao;
 static struct rpmpd gx_rwgx0_lvl = {
 	.pd = { .name = "gx", },
 	.peer = &gx_rwgx0_lvl_ao,
 	.res_type = RPMPD_RWGX,
+	.parent = &mx_rwmx0_lvl.pd,
 	.res_id = 0,
 	.key = KEY_LEVEL,
 };
@@ -228,6 +230,7 @@ static struct rpmpd gx_rwgx0_lvl = {
 static struct rpmpd gx_rwgx0_lvl_ao = {
 	.pd = { .name = "gx_ao", },
 	.peer = &gx_rwgx0_lvl,
+	.parent = &mx_rwmx0_lvl.pd,
 	.active_only = true,
 	.res_type = RPMPD_RWGX,
 	.res_id = 0,
-- 
2.39.1