linux-kernel - [PATCH] clk: sunxi-ng: ccu-sun6i-rtc: set rtc-32k to critical

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Message-Id: <20220424055959.109286-1-uwu@icenowy.me>
Date:   Sun, 24 Apr 2022 13:59:59 +0800
From:   Icenowy Zheng <uwu@...nowy.me>
To:     Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Samuel Holland <samuel@...lland.org>
Cc:     linux-clk@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-sunxi@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Icenowy Zheng <uwu@...nowy.me>
Subject: [PATCH] clk: sunxi-ng: ccu-sun6i-rtc: set rtc-32k to critical

RTC itself is the one and only consumer of rtc-32k clock. As the rtc
should be always running, set rtc-32k clock to critical, to prevent it
from being gated by the kernel.

Fixes: d91612d7f01a ("clk: sunxi-ng: Add support for the sun6i RTC clocks")
Signed-off-by: Icenowy Zheng <uwu@...nowy.me>
---
 drivers/clk/sunxi-ng/ccu-sun6i-rtc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/clk/sunxi-ng/ccu-sun6i-rtc.c b/drivers/clk/sunxi-ng/ccu-sun6i-rtc.c
index 8a10bade7e0d..3d9c9ce5a3db 100644
--- a/drivers/clk/sunxi-ng/ccu-sun6i-rtc.c
+++ b/drivers/clk/sunxi-ng/ccu-sun6i-rtc.c
@@ -241,6 +241,7 @@ static struct clk_init_data rtc_32k_init_data = {
 	.ops		= &ccu_mux_ops,
 	.parent_hws	= rtc_32k_parents,
 	.num_parents	= ARRAY_SIZE(rtc_32k_parents), /* updated during probe */
+	.flags		= CLK_IS_CRITICAL,
 };
 
 static struct ccu_mux rtc_32k_clk = {
-- 
2.35.1