diff mbox series

[v4,3/4] clk: renesas: r9a08g045: Mark the watchdog and always-on PM domains as IRQ safe

Message ID 20241015164732.4085249-4-claudiu.beznea.uj@bp.renesas.com (mailing list archive)
State Handled Elsewhere, archived
Headers show
Series watchdog: rzg2l_wdt: Enable properly the watchdog clocks and power domain | expand

Commit Message

Claudiu Beznea Oct. 15, 2024, 4:47 p.m. UTC 
From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

If the watchdog is part of a dedicated power domain (as it may be on
RZ/G3S) the watchdog PM domain need to be powered on in the watchdog
restart handler. Currently, only the clocks are enabled in the watchdog
restart handler. To be able to also power on the PM domain we need to
call pm_runtime_resume_and_get() on the watchdog restart handler, mark
the watchdog device as IRQ safe and register the watchdog PM domain
with GENPD_FLAG_IRQ_SAFE.

Register watchdog PM domain as IRQ safe. Along with it the always-on
PM domain (parent of the watchdog domain) was marked as IRQ safe.

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v4:
- collected tags

Changes in v3:
- none

Changes in v2:
- changed patch title; it was "clk: renesas: rzg2l-cpg: Mark
  watchdog and always-on PM domains as IRQ safe"

Changes since RFC:
- none; this patch is new

 drivers/clk/renesas/r9a08g045-cpg.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

Comments

Geert Uytterhoeven Oct. 24, 2024, 10:03 a.m. UTC | #1 
On Tue, Oct 15, 2024 at 6:48 PM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> If the watchdog is part of a dedicated power domain (as it may be on
> RZ/G3S) the watchdog PM domain need to be powered on in the watchdog
> restart handler. Currently, only the clocks are enabled in the watchdog
> restart handler. To be able to also power on the PM domain we need to
> call pm_runtime_resume_and_get() on the watchdog restart handler, mark
> the watchdog device as IRQ safe and register the watchdog PM domain
> with GENPD_FLAG_IRQ_SAFE.
>
> Register watchdog PM domain as IRQ safe. Along with it the always-on
> PM domain (parent of the watchdog domain) was marked as IRQ safe.
>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v4:
> - collected tags

Thanks, will queue in renesas-clk for v6.13.

Gr{oetje,eeting}s,

                        Geert
diff mbox series

Patch

diff --git a/drivers/clk/renesas/r9a08g045-cpg.c b/drivers/clk/renesas/r9a08g045-cpg.c
index a24cafcbc619..f5f454832bb5 100644
--- a/drivers/clk/renesas/r9a08g045-cpg.c
+++ b/drivers/clk/renesas/r9a08g045-cpg.c
@@ -267,7 +267,7 @@  static const struct rzg2l_cpg_pm_domain_init_data r9a08g045_pm_domains[] = {
 	/* Keep always-on domain on the first position for proper domains registration. */
 	DEF_PD("always-on",	R9A08G045_PD_ALWAYS_ON,
 				DEF_REG_CONF(0, 0),
-				GENPD_FLAG_ALWAYS_ON),
+				GENPD_FLAG_ALWAYS_ON | GENPD_FLAG_IRQ_SAFE),
 	DEF_PD("gic",		R9A08G045_PD_GIC,
 				DEF_REG_CONF(CPG_BUS_ACPU_MSTOP, BIT(3)),
 				GENPD_FLAG_ALWAYS_ON),
@@ -278,7 +278,8 @@  static const struct rzg2l_cpg_pm_domain_init_data r9a08g045_pm_domains[] = {
 				DEF_REG_CONF(CPG_BUS_REG1_MSTOP, GENMASK(3, 0)),
 				GENPD_FLAG_ALWAYS_ON),
 	DEF_PD("wdt0",		R9A08G045_PD_WDT0,
-				DEF_REG_CONF(CPG_BUS_REG0_MSTOP, BIT(0)), 0),
+				DEF_REG_CONF(CPG_BUS_REG0_MSTOP, BIT(0)),
+				GENPD_FLAG_IRQ_SAFE),
 	DEF_PD("sdhi0",		R9A08G045_PD_SDHI0,
 				DEF_REG_CONF(CPG_BUS_PERI_COM_MSTOP, BIT(0)), 0),
 	DEF_PD("sdhi1",		R9A08G045_PD_SDHI1,