linux-kernel - [PATCH 1/7] drivers: soc: qcom: rpmpd: Fix MSM8976 power domains setup

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Message-Id: <20230723140712.9438-2-a39.skl@gmail.com>
Date:   Sun, 23 Jul 2023 16:06:48 +0200
From:   Adam Skladowski <a39.skl@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     phone-devel@...r.kernel.org, ~postmarketos/upstreaming@...ts.sr.ht,
        Adam Skladowski <a39.skl@...il.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Andy Gross <agross@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/7] drivers: soc: qcom: rpmpd: Fix MSM8976 power domains setup

Downstream kernel parses resource names based on pm8950-rpm-regulator.dtsi
in such file qcom,resource-name takes three values: smpa,ldoa and clk0.
First appearance of RWSC/RWSM point to msm-4.4 kernel
which is way newer than what this platform was shipped with (msm-3.10).
For the max_state downstream code limit value to TURBO inside dts
with only one turbo_high being placed in msm-thermal bindings.
One of effects of requesting TURBO_HIGH vote is rebooting of device
which happens during voting inside WCNSS/IRIS,
this behavior was observed on LeEco S2 smartphone.
Fix regulator setup and drop unused resources.

Signed-off-by: Adam Skladowski <a39.skl@...il.com>
---
 drivers/soc/qcom/rpmpd.c | 25 +++++++++----------------
 1 file changed, 9 insertions(+), 16 deletions(-)

diff --git a/drivers/soc/qcom/rpmpd.c b/drivers/soc/qcom/rpmpd.c
index 3135dd1dafe0..69bc7c4d0ace 100644
--- a/drivers/soc/qcom/rpmpd.c
+++ b/drivers/soc/qcom/rpmpd.c
@@ -166,13 +166,6 @@ static struct rpmpd cx_rwcx0_vfl = {
 	.key = KEY_FLOOR_LEVEL,
 };
 
-static struct rpmpd cx_rwsc2_vfl = {
-	.pd = { .name = "cx_vfl", },
-	.res_type = RPMPD_RWSC,
-	.res_id = 2,
-	.key = KEY_FLOOR_LEVEL,
-};
-
 static struct rpmpd cx_s1a_vfc = {
 	.pd = { .name = "cx_vfc", },
 	.res_type = RPMPD_SMPA,
@@ -328,6 +321,12 @@ static struct rpmpd mx_s6a_lvl_ao = {
 	.res_id = 6,
 	.key = KEY_LEVEL,
 };
+static struct rpmpd mx_s6a_vfl = {
+	.pd = { .name = "mx_vfl", },
+	.res_type = RPMPD_SMPA,
+	.res_id = 6,
+	.key = KEY_FLOOR_LEVEL,
+};
 
 static struct rpmpd mx_s7a_lvl_ao;
 static struct rpmpd mx_s7a_lvl = {
@@ -361,12 +360,6 @@ static struct rpmpd mx_rwmx0_vfl = {
 	.key = KEY_FLOOR_LEVEL,
 };
 
-static struct rpmpd mx_rwsm6_vfl = {
-	.pd = { .name = "mx_vfl", },
-	.res_type = RPMPD_RWSM,
-	.res_id = 6,
-	.key = KEY_FLOOR_LEVEL,
-};
 
 /* MD */
 static struct rpmpd md_s1a_corner_ao;
@@ -591,16 +584,16 @@ static const struct rpmpd_desc msm8953_desc = {
 static struct rpmpd *msm8976_rpmpds[] = {
 	[MSM8976_VDDCX] =	&cx_s2a_lvl,
 	[MSM8976_VDDCX_AO] =	&cx_s2a_lvl_ao,
-	[MSM8976_VDDCX_VFL] =	&cx_rwsc2_vfl,
+	[MSM8976_VDDCX_VFL] =	&cx_s2a_vfl,
 	[MSM8976_VDDMX] =	&mx_s6a_lvl,
 	[MSM8976_VDDMX_AO] =	&mx_s6a_lvl_ao,
-	[MSM8976_VDDMX_VFL] =	&mx_rwsm6_vfl,
+	[MSM8976_VDDMX_VFL] =	&mx_s6a_vfl,
 };
 
 static const struct rpmpd_desc msm8976_desc = {
 	.rpmpds = msm8976_rpmpds,
 	.num_pds = ARRAY_SIZE(msm8976_rpmpds),
-	.max_state = RPM_SMD_LEVEL_TURBO_HIGH,
+	.max_state = RPM_SMD_LEVEL_TURBO,
 };
 
 static struct rpmpd *msm8994_rpmpds[] = {
-- 
2.41.0