clk: renesas: r8a779f0: Add WDT clock
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@glider.be>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/8d9b280065a663f2cf31db7b21a010aa781a0af1.1642525158.git.geert+renesas@glider.be
diff --git a/drivers/clk/renesas/r8a779f0-cpg-mssr.c b/drivers/clk/renesas/r8a779f0-cpg-mssr.c
index 4100078..e48c5af 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,
