linux-kernel - [PATCH v6 3/3] clk: amlogic: remove potentially unsafe flags from S4 video clocks

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Message-Id: <20250919-add_video_clk-v6-3-fe223161fb3f@amlogic.com>
Date: Fri, 19 Sep 2025 13:59:01 +0800
From: Chuan Liu via B4 Relay <devnull+chuan.liu.amlogic.com@...nel.org>
To: Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Neil Armstrong <neil.armstrong@...aro.org>, 
 Jerome Brunet <jbrunet@...libre.com>, Kevin Hilman <khilman@...libre.com>, 
 Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Cc: linux-clk@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-amlogic@...ts.infradead.org, 
 linux-arm-kernel@...ts.infradead.org, Chuan Liu <chuan.liu@...ogic.com>
Subject: [PATCH v6 3/3] clk: amlogic: remove potentially unsafe flags from
 S4 video clocks

From: Chuan Liu <chuan.liu@...ogic.com>

The video clocks enci, encp, vdac and hdmitx share the same clock
source. Adding CLK_SET_RATE_PARENT to the mux may unintentionally change
the shared parent clock, which could affect other video clocks.

Signed-off-by: Chuan Liu <chuan.liu@...ogic.com>
---
 drivers/clk/meson/s4-peripherals.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/clk/meson/s4-peripherals.c b/drivers/clk/meson/s4-peripherals.c
index aa500ea8ef9c..ba41fcd90588 100644
--- a/drivers/clk/meson/s4-peripherals.c
+++ b/drivers/clk/meson/s4-peripherals.c
@@ -1107,7 +1107,6 @@ static struct clk_regmap s4_cts_enci_sel = {
 		.ops = &clk_regmap_mux_ops,
 		.parent_hws = s4_cts_parents,
 		.num_parents = ARRAY_SIZE(s4_cts_parents),
-		.flags = CLK_SET_RATE_PARENT,
 	},
 };
 
@@ -1123,7 +1122,6 @@ static struct clk_regmap s4_cts_encp_sel = {
 		.ops = &clk_regmap_mux_ops,
 		.parent_hws = s4_cts_parents,
 		.num_parents = ARRAY_SIZE(s4_cts_parents),
-		.flags = CLK_SET_RATE_PARENT,
 	},
 };
 
@@ -1154,7 +1152,6 @@ static struct clk_regmap s4_cts_vdac_sel = {
 		.ops = &clk_regmap_mux_ops,
 		.parent_hws = s4_cts_parents,
 		.num_parents = ARRAY_SIZE(s4_cts_parents),
-		.flags = CLK_SET_RATE_PARENT,
 	},
 };
 
@@ -1185,7 +1182,6 @@ static struct clk_regmap s4_hdmi_tx_sel = {
 		.ops = &clk_regmap_mux_ops,
 		.parent_hws = s4_hdmi_tx_parents,
 		.num_parents = ARRAY_SIZE(s4_hdmi_tx_parents),
-		.flags = CLK_SET_RATE_PARENT,
 	},
 };
 

-- 
2.42.0