[PATCH] ARM: EXYNOS: Use platform device name as power domain name

[PATCH] ARM: EXYNOS: Use platform device name as power domain name

[Krzysztof Kozlowski]

The power domain nodes in DTS may be very generic (e.g. "power-domain"
for Exynos 5420) making it very hard to debug:

$ cat /sys/kernel/debug/pm_genpd/pm_genpd_summary
    domain                      status         slaves
power-domain                    on

Use platform device name instead so the names will be a little more user
friendly:
    domain                      status         slaves
100440e0.power-domain           on

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Suggested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Suggested-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
---
 arch/arm/mach-exynos/pm_domains.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mach-exynos/pm_domains.c b/arch/arm/mach-exynos/pm_domains.c
index 20f267121b3e..37642ea97d23 100644
--- a/arch/arm/mach-exynos/pm_domains.c
+++ b/arch/arm/mach-exynos/pm_domains.c
@@ -125,7 +125,7 @@ static __init int exynos4_pm_init_power_domain(void)
 			return -ENOMEM;
 		}
 
-		pd->pd.name = kstrdup(np->name, GFP_KERNEL);
+		pd->pd.name = kstrdup(dev_name(dev), GFP_KERNEL);
 		pd->name = pd->pd.name;
 		pd->base = of_iomap(np, 0);
 		pd->pd.power_off = exynos_pd_power_off;
-- 
1.9.1

[PATCH] ARM: EXYNOS: Use platform device name as power domain name

[Javier Martinez Canillas]

Hello 

Krzysztof,

On 02/10/2015 01:57 PM, Krzysztof Kozlowski wrote:
> The power domain nodes in DTS may be very generic (e.g. "power-domain"
> for Exynos 5420) making it very hard to debug:
> 
> $ cat /sys/kernel/debug/pm_genpd/pm_genpd_summary
>     domain                      status         slaves
> power-domain                    on
> 
> Use platform device name instead so the names will be a little more user
> friendly:
>     domain                      status         slaves
> 100440e0.power-domain           on
> 

I would had preferred to have even more info like 100440e0.mau-power-domain.
Maybe using the OF aliases approach that Sylwester suggested? But in any case
that could be complementary to your patch.

> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
> Suggested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
> Suggested-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>

Reviewed-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>

Best regards,
Javier