[PATCH 2/2] clk: renesas: r9a09g056: Remove entries for WDT{0,2,3}

From: Fabrizio Castro

Date: Tue Mar 24 2026 - 19:00:34 EST


The Renesas RZ/V2N SoC (a.k.a. r9a09g056) comes with 4 watchdogs.

As it turns out, it only makes sense for Linux to have access to
WDT1.

Remove the clock and reset entries for WDT{0,2,3} to prevent
interfering with the CM33 core.

This change is harmless as only WDT1 is currently used in Linux,
there are no users for the WDT{0,2,3} IPs.

Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@xxxxxxxxxxx>
---
drivers/clk/renesas/r9a09g056-cpg.c | 15 ---------------
1 file changed, 15 deletions(-)

diff --git a/drivers/clk/renesas/r9a09g056-cpg.c b/drivers/clk/renesas/r9a09g056-cpg.c
index 549c882f9a18..2ff2935aeb0d 100644
--- a/drivers/clk/renesas/r9a09g056-cpg.c
+++ b/drivers/clk/renesas/r9a09g056-cpg.c
@@ -273,22 +273,10 @@ static const struct rzv2h_mod_clk r9a09g056_mod_clks[] __initconst = {
BUS_MSTOP(11, BIT(15))),
DEF_MOD("gtm_7_pclk", CLK_PLLCLN_DIV16, 4, 10, 2, 10,
BUS_MSTOP(12, BIT(0))),
- DEF_MOD("wdt_0_clkp", CLK_PLLCM33_DIV16, 4, 11, 2, 11,
- BUS_MSTOP(3, BIT(10))),
- DEF_MOD("wdt_0_clk_loco", CLK_QEXTAL, 4, 12, 2, 12,
- BUS_MSTOP(3, BIT(10))),
DEF_MOD("wdt_1_clkp", CLK_PLLCLN_DIV16, 4, 13, 2, 13,
BUS_MSTOP(1, BIT(0))),
DEF_MOD("wdt_1_clk_loco", CLK_QEXTAL, 4, 14, 2, 14,
BUS_MSTOP(1, BIT(0))),
- DEF_MOD("wdt_2_clkp", CLK_PLLCLN_DIV16, 4, 15, 2, 15,
- BUS_MSTOP(5, BIT(12))),
- DEF_MOD("wdt_2_clk_loco", CLK_QEXTAL, 5, 0, 2, 16,
- BUS_MSTOP(5, BIT(12))),
- DEF_MOD("wdt_3_clkp", CLK_PLLCLN_DIV16, 5, 1, 2, 17,
- BUS_MSTOP(5, BIT(13))),
- DEF_MOD("wdt_3_clk_loco", CLK_QEXTAL, 5, 2, 2, 18,
- BUS_MSTOP(5, BIT(13))),
DEF_MOD("rtc_0_clk_rtc", CLK_PLLCM33_DIV16, 5, 3, 2, 19,
BUS_MSTOP(3, BIT(11) | BIT(12))),
DEF_MOD("rspi_0_pclk", CLK_PLLCLN_DIV8, 5, 4, 2, 20,
@@ -571,10 +559,7 @@ static const struct rzv2h_reset r9a09g056_resets[] __initconst = {
DEF_RST(7, 2, 3, 3), /* GTM_5_PRESETZ */
DEF_RST(7, 3, 3, 4), /* GTM_6_PRESETZ */
DEF_RST(7, 4, 3, 5), /* GTM_7_PRESETZ */
- DEF_RST(7, 5, 3, 6), /* WDT_0_RESET */
DEF_RST(7, 6, 3, 7), /* WDT_1_RESET */
- DEF_RST(7, 7, 3, 8), /* WDT_2_RESET */
- DEF_RST(7, 8, 3, 9), /* WDT_3_RESET */
DEF_RST(8, 1, 3, 18), /* RSCI0_PRESETN */
DEF_RST(8, 2, 3, 19), /* RSCI0_TRESETN */
DEF_RST(8, 3, 3, 20), /* RSCI1_PRESETN */
--
2.43.0