[PATCH] clk: rockchip: rk3036: Add apll as the critical clock
From: heiko@sntech.de (Heiko Stuebner)
Date: 2016-01-21 09:22:08
Also in:
linux-clk, linux-rockchip, lkml
Hi Xing, Am Mittwoch, 20. Januar 2016, 16:37:17 schrieb Xing Zheng:
The apll may be closed if there are some child clock nodes below
it when the device startup. Therefore, the apll should be keep
critical.
The apll tree like this:
pll_apll
apll
armclk
pclk_dbg
aclk_core_pre
aclk_hvec
uart_pll_clk
uart2_src
uart2_frac
uart1_src
uart1_frac
uart0_src
uart0_fraccan you find out which of those clocks does cause your hang? Because things like the uart-clocks for example should be handled by their driver already, at the time the clk_disable_unused runs(). So I'd really like the critical clock to be the actually needed clock. Thanks Heiko
quoted hunk ↗ jump to hunk
Signed-off-by: Xing Zheng <redacted> --- drivers/clk/rockchip/clk-rk3036.c | 1 + 1 file changed, 1 insertion(+)diff --git a/drivers/clk/rockchip/clk-rk3036.cb/drivers/clk/rockchip/clk-rk3036.c index ebce980..483913b 100644--- a/drivers/clk/rockchip/clk-rk3036.c +++ b/drivers/clk/rockchip/clk-rk3036.c@@ -425,6 +425,7 @@ static struct rockchip_clk_branchrk3036_clk_branches[] __initdata = { }; static const char *const rk3036_critical_clocks[] __initconst = { + "apll", "aclk_cpu", "aclk_peri", "hclk_peri",