[PATCH 7/9] clk: rockchip: Mark pclk_usb as critical on rk3568

[Chris Morgan <macroalpha82@gmail.com>]

From: Chris Morgan <macromorgan@hotmail.com>

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 <macromorgan@hotmail.com>
---
 drivers/clk/rockchip/clk-rk3568.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/clk/rockchip/clk-rk3568.c b/drivers/clk/rockchip/clk-rk3568.c
index a8457b17bc41..0e0b7b396682 100644
--- a/drivers/clk/rockchip/clk-rk3568.c
+++ b/drivers/clk/rockchip/clk-rk3568.c
@@ -1596,6 +1596,7 @@ 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 = {
-- 
2.34.1