linux-kernel - [PATCH] clk: meson: meson8b: Don't use MPLL1 as parent of vclk_in

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Message-Id: <20210524104533.555953-1-martin.blumenstingl@googlemail.com>
Date:   Mon, 24 May 2021 12:45:33 +0200
From:   Martin Blumenstingl <martin.blumenstingl@...glemail.com>
To:     jbrunet@...libre.com, linux-amlogic@...ts.infradead.org
Cc:     narmstrong@...libre.com, mturquette@...libre.com, sboyd@...nel.org,
        khilman@...libre.com, linux-clk@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Subject: [PATCH] clk: meson: meson8b: Don't use MPLL1 as parent of vclk_in_sel

MPLL1 is needed for audio output. Drop it from the vclk_in_sel parent
list so we only use the (mutable) vid_pll_final_div tree or one of the
(fixed) FCLK_DIV{3,4,5} clocks.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
---
 drivers/clk/meson/meson8b.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/meson/meson8b.c b/drivers/clk/meson/meson8b.c
index a844d35b553a..f8bd211db720 100644
--- a/drivers/clk/meson/meson8b.c
+++ b/drivers/clk/meson/meson8b.c
@@ -1154,6 +1154,10 @@ static struct clk_regmap meson8b_vid_pll_final_div = {
 	},
 };
 
+/*
+ * parent 0x6 is meson8b_mpll1 but we don't use it here because it's reserved
+ * for the audio outputs.
+ */
 static const struct clk_hw *meson8b_vclk_mux_parent_hws[] = {
 	&meson8b_vid_pll_final_div.hw,
 	&meson8b_fclk_div4.hw,
@@ -1161,7 +1165,6 @@ static const struct clk_hw *meson8b_vclk_mux_parent_hws[] = {
 	&meson8b_fclk_div5.hw,
 	&meson8b_vid_pll_final_div.hw,
 	&meson8b_fclk_div7.hw,
-	&meson8b_mpll1.hw,
 };
 
 static struct clk_regmap meson8b_vclk_in_sel = {
-- 
2.31.1