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sunxi: psci: Fix sunxi_power_switch on sun8i-r40 platform 

linux system will die if we offline one of the cpu on R40 based board:
eg: echo 0 > /sys/devices/system/cpu/cpu3/online

The reason is that the R40 version of sunxi_cpu_set_power always passes
0 for the CPU number, so we turn off CPU0, regardless of what CPU the
CPU_OFF request came for.

Fix this by passing the proper CPU number, as there are proper power
clamp registers for every of the four cores.

Signed-off-by: qianfan Zhao <qianfanguijin@163.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
This commit is contained in:
qianfan Zhao 2022-05-14 11:19:23 +08:00 committed by Andre Przywara
parent e008e5132f
commit 47ca7b574f
1 changed files with 1 additions and 1 deletions
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2
arch/arm/cpu/armv7/sunxi/psci.c
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@ -153,7 +153,7 @@ static void __secure sunxi_cpu_set_power(int cpu, bool on)
sunxi_power_switch((void *)cpucfg + SUN8I_R40_PWR_CLAMP(cpu), sunxi_power_switch((void *)cpucfg + SUN8I_R40_PWR_CLAMP(cpu),
(void *)cpucfg + SUN8I_R40_PWROFF, (void *)cpucfg + SUN8I_R40_PWROFF,
on, 0); on, cpu);
} }
#else /* ! CONFIG_MACH_SUN7I && ! CONFIG_MACH_SUN8I_R40 */ #else /* ! CONFIG_MACH_SUN7I && ! CONFIG_MACH_SUN8I_R40 */
static void __secure sunxi_cpu_set_power(int cpu, bool on) static void __secure sunxi_cpu_set_power(int cpu, bool on)