[PATCH v2] clk: sunxi-ng: Mark A523 bus-r-cpucfg clock as critical

[PATCH v2] clk: sunxi-ng: Mark A523 bus-r-cpucfg clock as critical

[Jernej Skrabec]

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

Re: [PATCH v2] clk: sunxi-ng: Mark A523 bus-r-cpucfg clock as critical

[Chen-Yu Tsai]

On Mon, 20 Oct 2025 17:27:04 +0200, Jernej Skrabec wrote:
> 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.
> 
> 

Applied to sunxi/clk-fixes-for-6.18 in local tree, thanks!

[1/1] clk: sunxi-ng: Mark A523 bus-r-cpucfg clock as critical
      commit: 1dba74abf3e2fa4484b924d8ba6e54e64ebb8c82

Best regards,
-- 
Chen-Yu Tsai <wens@kernel.org>