On Tue, Jan 18, 2022 at 06:09:01PM +0100, Geert Uytterhoeven wrote:
> Add the module clock used by the RCLK Watchdog Timer (RWDT) on the
> Renesas R-Car S4-8 (r8a779f0) SoC. Mark it as a critical clock, to
> ensure uninterrupted watchdog operation.
>
> Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
> Reviewed-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
Acked-by: Guenter Roeck <linux@xxxxxxxxxxxx>
> ---
> drivers/clk/renesas/r8a779f0-cpg-mssr.c | 9 +++++++++
> 1 file changed, 9 insertions(+)
>
> diff --git a/drivers/clk/renesas/r8a779f0-cpg-mssr.c b/drivers/clk/renesas/r8a779f0-cpg-mssr.c
> index 4100078406d67073..e48c5af7341454a7 100644
> --- a/drivers/clk/renesas/r8a779f0-cpg-mssr.c
> +++ b/drivers/clk/renesas/r8a779f0-cpg-mssr.c
> @@ -121,6 +121,11 @@ static const struct mssr_mod_clk r8a779f0_mod_clks[] __initconst = {
> DEF_MOD("scif4", 705, R8A779F0_CLK_S0D12_PER),
> DEF_MOD("sys-dmac0", 709, R8A779F0_CLK_S0D3_PER),
> DEF_MOD("sys-dmac1", 710, R8A779F0_CLK_S0D3_PER),
> + DEF_MOD("wdt", 907, R8A779F0_CLK_R),
> +};
> +
> +static const unsigned int r8a779f0_crit_mod_clks[] __initconst = {
> + MOD_CLK_ID(907), /* WDT */
> };
>
> /*
> @@ -177,6 +182,10 @@ const struct cpg_mssr_info r8a779f0_cpg_mssr_info __initconst = {
> .num_mod_clks = ARRAY_SIZE(r8a779f0_mod_clks),
> .num_hw_mod_clks = 28 * 32,
>
> + /* Critical Module Clocks */
> + .crit_mod_clks = r8a779f0_crit_mod_clks,
> + .num_crit_mod_clks = ARRAY_SIZE(r8a779f0_crit_mod_clks),
> +
> /* Callbacks */
> .init = r8a779f0_cpg_mssr_init,
> .cpg_clk_register = rcar_gen4_cpg_clk_register,
