linux-kernel - [tip: timers/core] clocksource/drivers/renesas-ostm: Allow OSTM driver to reprobe for RZ/V2H(P) SoC

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Date: Fri, 10 May 2024 11:10:55 -0000
From: "tip-bot2 for Lad Prabhakar" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
 Geert Uytterhoeven <geert+renesas@...der.be>,
 Daniel Lezcano <daniel.lezcano@...aro.org>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject: [tip: timers/core] clocksource/drivers/renesas-ostm: Allow OSTM
 driver to reprobe for RZ/V2H(P) SoC

The following commit has been merged into the timers/core branch of tip:

Commit-ID:     0f63c95aebf11d87b166a5dfd389957c67fef9c0
Gitweb:        https://git.kernel.org/tip/0f63c95aebf11d87b166a5dfd389957c67fef9c0
Author:        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
AuthorDate:    Fri, 22 Mar 2024 15:12:19 
Committer:     Daniel Lezcano <daniel.lezcano@...aro.org>
CommitterDate: Fri, 10 May 2024 10:41:52 +02:00

clocksource/drivers/renesas-ostm: Allow OSTM driver to reprobe for RZ/V2H(P) SoC

The RZ/V2H(P) (R9A09G057) SoC is equipped with the Generic Timer Module,
also known as OSTM. Similar to the RZ/G2L SoC, the OSTM on the RZ/V2H(P)
SoC requires the reset line to be deasserted before accessing any
registers.

Early call to ostm_init() happens through TIMER_OF_DECLARE() which always
fails with -EPROBE_DEFER, as resets are not available that early in the
boot process.  To address this issue on the RZ/V2H(P) SoC, enable the OSTM
driver to be reprobed through the platform driver probe mechanism.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>
Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
Link: https://lore.kernel.org/r/20240322151219.885832-3-prabhakar.mahadev-lad.rj@bp.renesas.com
---
 drivers/clocksource/renesas-ostm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clocksource/renesas-ostm.c b/drivers/clocksource/renesas-ostm.c
index 8da972d..39487d0 100644
--- a/drivers/clocksource/renesas-ostm.c
+++ b/drivers/clocksource/renesas-ostm.c
@@ -224,7 +224,7 @@ err_free:
 
 TIMER_OF_DECLARE(ostm, "renesas,ostm", ostm_init);
 
-#ifdef CONFIG_ARCH_RZG2L
+#if defined(CONFIG_ARCH_RZG2L) || defined(CONFIG_ARCH_R9A09G057)
 static int __init ostm_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;