pmdomain: renesas: Adjust the waiting time to cover the worst case

Description in HWM rev0.51E, 9.4 Usage notes, page 455 tells

	"It takes several hundreds of microseconds to shutting off and
	 resuming power domain. Because actual time required for
	 shutting off and resuming depends on the status of on-board
	 power line, shutoff/resume time is not guaranteed by
	 electrical specification"

Let's assume the safe value of waiting is about 1000us.

Signed-off-by: Dien Pham <dien.pham.ry@renesas.com>
Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
Signed-off-by: Tho Vu <tho.vu.wh@renesas.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/8734tx8b18.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/pmdomain/renesas/rcar-sysc.c b/drivers/pmdomain/renesas/rcar-sysc.c
index eed47696e8252664ef59b9278f3844b819655b59..35d9aa0dfab867fca3e8c3a4a4f9b83d7af85b42 100644 (file)
--- a/drivers/pmdomain/renesas/rcar-sysc.c
+++ b/drivers/pmdomain/renesas/rcar-sysc.c
@@ -45,10 +45,10 @@
 #define PWRER_OFFS             0x14    /* Power Shutoff/Resume Error */
 
 
-#define SYSCSR_TIMEOUT         100
+#define SYSCSR_TIMEOUT         1000
 #define SYSCSR_DELAY_US                1
 
-#define PWRER_RETRIES          100
+#define PWRER_RETRIES          1000
 #define PWRER_DELAY_US         1
 
 #define SYSCISR_TIMEOUT                1000