linux-kernel - [PATCH] clk: qcom: mmcc-msm8974: Fix mmss_s0

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Date:   Sat, 26 Dec 2020 15:09:34 +0100
From:   Konrad Dybcio <konrad.dybcio@...ainline.org>
To:     phone-devel@...r.kernel.org
Cc:     ~postmarketos/upstreaming@...ts.sr.ht,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Mike Turquette <mturquette@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] clk: qcom: mmcc-msm8974: Fix mmss_s0_axi clock

On boards without cont_splash the clock wouldn't get enabled.
Reparent it and strongly depend on the parent to make sure
it's accessible. Access to MMSS depends on mmss_s0_axi being
up and alive.

Fixes: d8b212014e69 ("clk: qcom: Add support for MSM8974's multimedia clock controller (MMCC)")
Signed-off-by: Konrad Dybcio <konrad.dybcio@...ainline.org>
---
 drivers/clk/qcom/mmcc-msm8974.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/qcom/mmcc-msm8974.c b/drivers/clk/qcom/mmcc-msm8974.c
index 015426262d08..6220b62ece1e 100644
--- a/drivers/clk/qcom/mmcc-msm8974.c
+++ b/drivers/clk/qcom/mmcc-msm8974.c
@@ -2101,11 +2101,11 @@ static struct clk_branch mmss_s0_axi_clk = {
 		.hw.init = &(struct clk_init_data){
 			.name = "mmss_s0_axi_clk",
 			.parent_names = (const char *[]){
-				"mmss_axi_clk_src",
+				"mmss_mmssnoc_axi_clk",
 			},
 			.num_parents = 1,
 			.ops = &clk_branch2_ops,
-			.flags = CLK_IGNORE_UNUSED,
+			.flags = CLK_IGNORE_UNUSED | CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE,
 		},
 	},
 };
-- 
2.29.2