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

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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>
This commit is contained in:
Dien Pham 2024-02-13 00:26:11 +00:00 committed by Ulf Hansson
parent 5bf85865ea
commit 713240877a
1 changed files with 2 additions and 2 deletions
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4
drivers/pmdomain/renesas/rcar-sysc.c
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@ -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