linux-kernel - [PATCH 4/4] clk: qcom: gpucc-sm6350: Add *_wait

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-prev] [day] [month] [year] [list]

Message-Id: <20250425-sm6350-gdsc-val-v1-4-1f252d9c5e4e@fairphone.com>
Date: Fri, 25 Apr 2025 14:12:58 +0200
From: Luca Weiss <luca.weiss@...rphone.com>
To: Bjorn Andersson <andersson@...nel.org>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, Konrad Dybcio <konradybcio@...nel.org>, 
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...ainline.org>
Cc: ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org, 
 linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Luca Weiss <luca.weiss@...rphone.com>
Subject: [PATCH 4/4] clk: qcom: gpucc-sm6350: Add *_wait_val values for
 GDSCs

Compared to the msm-4.19 driver the mainline GDSC driver always sets the
bits for en_rest, en_few & clk_dis, and if those values are not set
per-GDSC in the respective driver then the default value from the GDSC
driver is used. The downstream driver only conditionally sets
clk_dis_wait_val if qcom,clk-dis-wait-val is given in devicetree.

Correct this situation by explicitly setting those values. For all GDSCs
the reset value of those bits are used, with the exception of
gpu_cx_gdsc which has an explicit value (qcom,clk-dis-wait-val = <8>).

Fixes: 013804a727a0 ("clk: qcom: Add GPU clock controller driver for SM6350")
Signed-off-by: Luca Weiss <luca.weiss@...rphone.com>
---
 drivers/clk/qcom/gpucc-sm6350.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/clk/qcom/gpucc-sm6350.c b/drivers/clk/qcom/gpucc-sm6350.c
index 35ed0500bc59319f9659aef81031b34d29fc06a4..ee89c42413f885f21f1470b1f7887d052e52a75e 100644
--- a/drivers/clk/qcom/gpucc-sm6350.c
+++ b/drivers/clk/qcom/gpucc-sm6350.c
@@ -413,6 +413,9 @@ static struct clk_branch gpu_cc_gx_vsense_clk = {
 static struct gdsc gpu_cx_gdsc = {
 	.gdscr = 0x106c,
 	.gds_hw_ctrl = 0x1540,
+	.en_rest_wait_val = 0x2,
+	.en_few_wait_val = 0x2,
+	.clk_dis_wait_val = 0x8,
 	.pd = {
 		.name = "gpu_cx_gdsc",
 	},
@@ -423,6 +426,9 @@ static struct gdsc gpu_cx_gdsc = {
 static struct gdsc gpu_gx_gdsc = {
 	.gdscr = 0x100c,
 	.clamp_io_ctrl = 0x1508,
+	.en_rest_wait_val = 0x2,
+	.en_few_wait_val = 0x2,
+	.clk_dis_wait_val = 0x2,
 	.pd = {
 		.name = "gpu_gx_gdsc",
 		.power_on = gdsc_gx_do_nothing_enable,

-- 
2.49.0