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authorSascha Hauer <s.hauer@pengutronix.de>2023-10-18 09:16:59 +0300
committerChanwoo Choi <cw00.choi@samsung.com>2023-10-19 14:46:17 +0300
commit038ff6f53da07971a9df636bcc9bf1344c468dd5 (patch)
tree84f7d29ca167691e3cfd0f61ead87194afae8da7 /drivers/devfreq
parent076b0597f5b6fbec47cddedf9b39d864938a365c (diff)
downloadlinux-038ff6f53da07971a9df636bcc9bf1344c468dd5.tar.xz
PM / devfreq: rockchip-dfi: Handle LPDDR2 correctly
According to the downstream driver the DDRMON_CTRL_LPDDR23 bit must be set for both LPDDR2 and LPDDR3. Add the missing LPDDR2 case and while at it turn the if/else if/else into switch/case which makes it easier to read. Link: https://lore.kernel.org/all/20231018061714.3553817-12-s.hauer@pengutronix.de/ Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Diffstat (limited to 'drivers/devfreq')
-rw-r--r--drivers/devfreq/event/rockchip-dfi.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/devfreq/event/rockchip-dfi.c b/drivers/devfreq/event/rockchip-dfi.c
index 571d72d1abd1..8ce0191552ef 100644
--- a/drivers/devfreq/event/rockchip-dfi.c
+++ b/drivers/devfreq/event/rockchip-dfi.c
@@ -83,12 +83,19 @@ static void rockchip_dfi_start_hardware_counter(struct devfreq_event_dev *edev)
DDRMON_CTRL_HARDWARE_EN), dfi_regs + DDRMON_CTRL);
/* set ddr type to dfi */
- if (dfi->ddr_type == ROCKCHIP_DDRTYPE_LPDDR3)
+ switch (dfi->ddr_type) {
+ case ROCKCHIP_DDRTYPE_LPDDR2:
+ case ROCKCHIP_DDRTYPE_LPDDR3:
writel_relaxed(HIWORD_UPDATE(DDRMON_CTRL_LPDDR23, DDRMON_CTRL_DDR_TYPE_MASK),
dfi_regs + DDRMON_CTRL);
- else if (dfi->ddr_type == ROCKCHIP_DDRTYPE_LPDDR4)
+ break;
+ case ROCKCHIP_DDRTYPE_LPDDR4:
writel_relaxed(HIWORD_UPDATE(DDRMON_CTRL_LPDDR4, DDRMON_CTRL_DDR_TYPE_MASK),
dfi_regs + DDRMON_CTRL);
+ break;
+ default:
+ break;
+ }
/* enable count, use software mode */
writel_relaxed(HIWORD_UPDATE(DDRMON_CTRL_SOFTWARE_EN, DDRMON_CTRL_SOFTWARE_EN),