Re: [PATCH V2 2/2] soc: s4: Add support for power domains controller

On Thu, Dec 30, 2021 at 10:44 AM Shunzhou.Jiang
[off-list ref] wrote:

From: Shunzhou Jiang <redacted>

Add support s4 Power controller. In s4, power control
registers are in secure domain, and should be accessed by smc.

Signed-off-by: Shunzhou Jiang <redacted>

Also here I don't have any datasheet to compare this with, so this gets my:
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>

[...]

+       SEC_PD(S4_VPU_HDMI,     GENPD_FLAG_ALWAYS_ON),
+       SEC_PD(S4_USB_COMB,     GENPD_FLAG_ALWAYS_ON),
+       SEC_PD(S4_GE2D,         0),
+       SEC_PD(S4_ETH,          GENPD_FLAG_ALWAYS_ON),

For the A1 SoC's UART entry we have the following comment which
explains why we want to to be "always on":
  UART should keep working in ATF after suspend and before resume

If for some reason you need to re-send this series then it would be
great if you could add a comment above each entry with
GENPD_FLAG_ALWAYS_ON.
It will help others (like me) understand these SoCs better.


Best regards,
Martin