diff mbox series

[v2] clocksource: sh_cmt: don't use CMTOUT_IE with R-Car Gen2/3

Message ID 20210309094448.31823-1-wsa+renesas@sang-engineering.com (mailing list archive)
State Accepted
Delegated to: Geert Uytterhoeven
Headers show
Series [v2] clocksource: sh_cmt: don't use CMTOUT_IE with R-Car Gen2/3 | expand

Commit Message

Wolfram Sang March 9, 2021, 9:44 a.m. UTC
CMTOUT_IE is only supported for older SoCs. Newer SoCs shall not set
this bit. So, add a version check.

Reported-by: Phong Hoang <phong.hoang.wz@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---

Changes since v1:
* updated $subject
* added tags

 drivers/clocksource/sh_cmt.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/clocksource/sh_cmt.c b/drivers/clocksource/sh_cmt.c
index c98f8851fd68..d7ed99f0001f 100644
--- a/drivers/clocksource/sh_cmt.c
+++ b/drivers/clocksource/sh_cmt.c
@@ -339,8 +339,9 @@  static int sh_cmt_enable(struct sh_cmt_channel *ch)
 		sh_cmt_write_cmcsr(ch, SH_CMT16_CMCSR_CMIE |
 				   SH_CMT16_CMCSR_CKS512);
 	} else {
-		sh_cmt_write_cmcsr(ch, SH_CMT32_CMCSR_CMM |
-				   SH_CMT32_CMCSR_CMTOUT_IE |
+		u32 cmtout = ch->cmt->info->model <= SH_CMT_48BIT ?
+			      SH_CMT32_CMCSR_CMTOUT_IE : 0;
+		sh_cmt_write_cmcsr(ch, cmtout | SH_CMT32_CMCSR_CMM |
 				   SH_CMT32_CMCSR_CMR_IRQ |
 				   SH_CMT32_CMCSR_CKS_RCLK8);
 	}