Hi Krzysztof,
On 15.05.2014 13:18, Krzysztof Kozlowski wrote:
> Without software reset the secondary CPU does not power up and
> exynos_boot_secondary() ends with pen_release equal to 1. This can be
> observed in dmesg:
> CPU1: failed to come online
> Brought up 1 CPUs
> SMP: Total of 1 processors activated.
> CPU: All CPU(s) started in SVC mode.
>
> When booting the secondary CPU on Exynos3250 execute also software
> reset for core 1.
>
> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>
> ---
> arch/arm/mach-exynos/platsmp.c | 22 ++++++++++++++++++++++
> arch/arm/mach-exynos/regs-pmu.h | 3 +++
> 2 files changed, 25 insertions(+)
>
> diff --git a/arch/arm/mach-exynos/platsmp.c b/arch/arm/mach-exynos/platsmp.c
> index 8b88eb2f077b..64ec5ca18f60 100644
> --- a/arch/arm/mach-exynos/platsmp.c
> +++ b/arch/arm/mach-exynos/platsmp.c
> @@ -76,6 +76,25 @@ static inline void __iomem *cpu_boot_reg(int cpu)
> }
>
> /*
> + * Set wake up by local power mode and execute software reset for given core.
> + *
> + * Currently this is needed only when booting secondary CPU on Exynos3250.
> + */
> +static inline void exynos_core_restart(u32 core_id)
nit: AFAIK when not strictly necessary, it's preferable to let the
compiler decide to inline a function or not, instead of adding the
inline keyword.
> +{
> + if (of_machine_is_compatible("samsung,exynos3250")) {
nit: This could be probably changed into
if (!of_machine_is_compatible("samsung,exynos3250"))
return;
Other than these two minor nitpicks the patch looks good, so if there is
no reason to resend, feel free to ignore them. Although I think it might
be necessary to rebase it on Kukjin's for-next.
Reviewed-by: Tomasz Figa <t.figa@xxxxxxxxxxx>
Best regards,
Tomasz
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