On Fri, Aug 23, 2024 at 10:54:06AM +0300, claudiu beznea wrote: > Hi, Conor, > > On 22.08.2024 19:42, Conor Dooley wrote: > > On Thu, Aug 22, 2024 at 06:27:47PM +0300, Claudiu wrote: > >> From: Claudiu Beznea <claudiu.beznea.uj@xxxxxxxxxxxxxx> > >> > >> The RZ/G3S System controller has registers to control signals that need > >> to be de-asserted/asserted before/after different SoC areas are power > >> on/off. This signals are implemented as reset signals. For this document > >> the #reset-cells property. > >> > >> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@xxxxxxxxxxxxxx> > >> --- > >> .../bindings/soc/renesas/renesas,rzg2l-sysc.yaml | 16 ++++++++++++++++ > >> 1 file changed, 16 insertions(+) > >> > >> diff --git a/Documentation/devicetree/bindings/soc/renesas/renesas,rzg2l-sysc.yaml b/Documentation/devicetree/bindings/soc/renesas/renesas,rzg2l-sysc.yaml > >> index 4386b2c3fa4d..6b0bb34485d9 100644 > >> --- a/Documentation/devicetree/bindings/soc/renesas/renesas,rzg2l-sysc.yaml > >> +++ b/Documentation/devicetree/bindings/soc/renesas/renesas,rzg2l-sysc.yaml > >> @@ -42,12 +42,28 @@ properties: > >> - const: cm33stbyr_int > >> - const: ca55_deny > >> > >> + "#reset-cells": > >> + const: 1 > >> + > >> required: > >> - compatible > >> - reg > >> > >> additionalProperties: false > >> > >> +allOf: > >> + - if: > >> + properties: > >> + compatible: > >> + contains: > >> + const: renesas,r9a08g045-sysc > >> + then: > >> + required: > >> + - "#reset-cells" > > > > Given this is new required property on an existing platform, I'd expect > > some mention of why it used to be okay to not have this but is now > > required. Did firmware or a bootloader stage take things out of reset? > > On previous SoCs the SYS controller has no support for controlling the > signals going to different peripherals (USB, PCIE in case of RZ/G3S). > I'll add a note about this on next version. My initial thought here wasn't about previous SoCs though, it was because you didn't add the compatible in this series for /this/ SoC. What's worth noting isn't about the prior SoCs, it is about what makes it okay for this one.
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