clk: rockchip: rk3568: Mark pclk_usb as critical

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>
Link: https://lore.kernel.org/r/20231204185719.569021-8-macroalpha82@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

diff --git a/drivers/clk/rockchip/clk-rk3568.c b/drivers/clk/rockchip/clk-rk3568.c
index 497a7e51ffda4437ca4525a2849d6e6232293387..feb9ae484387d79c42579abc3cbec11db2cdd7a2 100644 (file)
--- a/drivers/clk/rockchip/clk-rk3568.c
+++ b/drivers/clk/rockchip/clk-rk3568.c
@@ -1594,6 +1594,7 @@ static const char *const rk3568_cru_critical_clocks[] __initconst = {
        "hclk_php",
        "pclk_php",
        "hclk_usb",
+       "pclk_usb",
        "hclk_vo",
 };