[V2,07/10] clk: rockchip: Mark pclk_usb as critical on rk3568

Commit Message

Chris Morgan Dec. 4, 2023, 6:57 p.m. UTC

From: Chris Morgan <[e-mail]>

In the reference manual under "2.8.6 NIU Clock gating reliance"
it is stated that pclk_usb_niu has a dependency on hclk_usb_niu.

While the manual does not state that this is a bi-directional
relationship it was noted that the sdmmc2 failed to operate for me in
mmc mode if the pclk_usb was not marked as critical. The parent clock
of the hclk_sdmmc2 is hclk_usb.

Signed-off-by: Chris Morgan <[e-mail]>
---
 drivers/clk/rockchip/clk-rk3568.c | 1 +
 1 file changed, 1 insertion(+)

Patch

diff --git a/drivers/clk/rockchip/clk-rk3568.c b/drivers/clk/rockchip/clk-rk3568.c
index bfbcbb744327..c4fa2375dbfb 100644
--- a/drivers/clk/rockchip/clk-rk3568.c
+++ b/drivers/clk/rockchip/clk-rk3568.c
@@ -1595,6 +1595,7 @@  static const char *const rk3568_cru_critical_clocks[] __initconst = {
 	"pclk_php",
 	"hclk_usb",
 	"hclk_vo",
+	"pclk_usb",
 };
 
 static const char *const rk3568_pmucru_critical_clocks[] __initconst = {