linux-kernel - [PATCH 3/3] clk: rockchip: rk3036: mark ddrphy as critical

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Message-ID: <20250503202532.992033-4-heiko@sntech.de>
Date: Sat,  3 May 2025 22:25:31 +0200
From: Heiko Stuebner <heiko@...ech.de>
To: heiko@...ech.de
Cc: mturquette@...libre.com,
	sboyd@...nel.org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	linux-clk@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org
Subject: [PATCH 3/3] clk: rockchip: rk3036: mark ddrphy as critical

The ddrphy is supplied by the dpll, but due to the limited number of PLLs
on the rk3036, the dpll also is used for other periperhals, like the GPU.

So it happened, when the Lima driver turned off the gpu clock, this in
turn also disabled the dpll and thus the ram.

Signed-off-by: Heiko Stuebner <heiko@...ech.de>
---
 drivers/clk/rockchip/clk-rk3036.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/clk/rockchip/clk-rk3036.c b/drivers/clk/rockchip/clk-rk3036.c
index 41c71bb25171..df9330958c83 100644
--- a/drivers/clk/rockchip/clk-rk3036.c
+++ b/drivers/clk/rockchip/clk-rk3036.c
@@ -435,6 +435,7 @@ static const char *const rk3036_critical_clocks[] __initconst = {
 	"hclk_peri",
 	"pclk_peri",
 	"pclk_ddrupctl",
+	"ddrphy",
 };
 
 static void __init rk3036_clk_init(struct device_node *np)
-- 
2.47.2