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From: Jernej Skrabec <jernej.skrabec@gmail.com>
To: wens@csie.org, samuel@sholland.org
Cc: mturquette@baylibre.com, sboyd@kernel.org,
	linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org,
	Jernej Skrabec <jernej.skrabec@gmail.com>,
	Andre Przywara <andre.przywara@arm.com>
Subject: [PATCH v2] clk: sunxi-ng: Mark A523 bus-r-cpucfg clock as critical
Date: Mon, 20 Oct 2025 17:27:04 +0200	[thread overview]
Message-ID: <20251020152704.4804-1-jernej.skrabec@gmail.com> (raw)

bus-r-cpucfg clock is important for peripheral which takes care of
powering CPU cores on and off. Since this operation is done by firmware
(TF-A), mark it 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@gmail.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Tested-by: Andre Przywara <andre.przywara@arm.com>
---
Changes from v1:
- fixed typos
- added r-b and t-b tags

 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


             reply	other threads:[~2025-10-20 15:27 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-10-20 15:27 Jernej Skrabec [this message]
2025-10-21 16:54 ` [PATCH v2] clk: sunxi-ng: Mark A523 bus-r-cpucfg clock as critical Chen-Yu Tsai

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