linux-kernel - [PATCH] clk: sunxi-ng: Mark A523 bus-r-cpucfg clock as critical

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Message-ID: <20251019172647.80379-1-jernej.skrabec@gmail.com>
Date: Sun, 19 Oct 2025 19:26:47 +0200
From: Jernej Skrabec <jernej.skrabec@...il.com>
To: wens@...e.org,
	samuel@...lland.org
Cc: mturquette@...libre.com,
	sboyd@...nel.org,
	linux-clk@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-sunxi@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	Jernej Skrabec <jernej.skrabec@...il.com>
Subject: [PATCH] clk: sunxi-ng: Mark A523 bus-r-cpucfg clock as critical

bus-r-cpucfg clock is important for peripheral which takes care for
powering CPU cores on and off. Since this operation is done by firmware
(TF-A), mark is as critical. That way Linux won't interfere with that
clock.

Fixes: 8cea339cfb81 ("clk: sunxi-ng: add support for the A523/T527 PRCM CCU")
Signed-off-by: Jernej Skrabec <jernej.skrabec@...il.com>
---
 drivers/clk/sunxi-ng/ccu-sun55i-a523-r.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/sunxi-ng/ccu-sun55i-a523-r.c b/drivers/clk/sunxi-ng/ccu-sun55i-a523-r.c
index 70ce0ca0cb7d..c5b0d4a2e397 100644
--- a/drivers/clk/sunxi-ng/ccu-sun55i-a523-r.c
+++ b/drivers/clk/sunxi-ng/ccu-sun55i-a523-r.c
@@ -125,7 +125,7 @@ static SUNXI_CCU_GATE_HW(bus_r_dma_clk, "bus-r-dma",
 static SUNXI_CCU_GATE_HW(bus_r_rtc_clk, "bus-r-rtc",
 			 &r_apb0_clk.common.hw, 0x20c, BIT(0), 0);
 static SUNXI_CCU_GATE_HW(bus_r_cpucfg_clk, "bus-r-cpucfg",
-			 &r_apb0_clk.common.hw, 0x22c, BIT(0), 0);
+			 &r_apb0_clk.common.hw, 0x22c, BIT(0), CLK_IS_CRITICAL);
 
 static struct ccu_common *sun55i_a523_r_ccu_clks[] = {
 	&r_ahb_clk.common,
-- 
2.51.1.dirty