# Re: \[PATCH v4 08/20\] drm/bridge: inno-hdmi: Allow the register map to come from a parent

- From: sashiko-bot@kernel.org
- Date: 2026-09-15 15:42:38 
- List: linux-devicetree
- Page: https://ratatoskr.run/linux-devicetree/2026/09/17580595
- Thread: https://ratatoskr.run/linux-clk/2026/09/17580529/t.md

```text
> On some SoCs the HDMI controller does not own its register window. The
> StarFive JH7110 documents one 64 KB block, u0_hdmitx, that holds both
> the controller and the PHY, so the parent device maps it and owns the
> regmap while the two children share it.
> 
> Use a regmap supplied by the parent device when there is one, and keep
> mapping our own resource when there is not, so platforms that own their
> register window are unaffected.
> 
> Reviewed-by: Joshua Peisach <redacted>
> Signed-off-by: Michal Wilczynski <m.wilczynski@samsung.com>

Sashiko has reviewed this patch and found no issues. It looks great!

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20260915-jh7110-clean-send-v4-0-f0e4fd6f2cc8@samsung.com?part=8

```