Re: [PATCH RFC v2 2/9] clk: renesas: r9a09g077: Add SYSC regmap support

[Geert Uytterhoeven]

Hi Prabhakar,

On Thu, 2 Jul 2026 at 14:31, Prabhakar <prabhakar.csengg@xxxxxxxxx> wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
>
> Add System Controller (SYSC) regmap support for the RZ/T2H SoC.
>
> The RZ/T2H SoC features two System Controller (SYSC) blocks that handle
> low-power management and access control. These blocks are defined as child
> nodes within the Clock Pulse Generator (CPG) address space in the device
> tree. Implement support for creating regmaps for these SYSC blocks.
>
> Register the regmap using of_syscon_register_regmap() against the CPG
> device node so that consumers can access SYSC registers via the existing
> syscon phandle.
>
> Add a sysc_init() callback to the CPG/MSSR core to allow SoC-specific
> initialization of the SYSC regmap.
>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
> ---
> v1->v2:
> - Made use of for_each_child_of_node_scoped
> - Moved sysc_init() to the end of the probe function

Thanks for the update!

> --- a/drivers/clk/renesas/r9a09g077-cpg.c
> +++ b/drivers/clk/renesas/r9a09g077-cpg.c

> +static int r9a09g077_sysc_init(struct device *dev)
> +{
> +       struct device_node *child, *np = dev->of_node;

error: unused variable ‘child’ [-Werror=unused-variable]

No need to resend yet.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds