The USB PHY clock can be configured as (grand) parent of uart0_sclk and sclk_gpu. It has been observed that UART0 doesn't work reliably in high speed mode with the PHY clock as input when certain USB devices are plugged to the USB HOST1 port (see https://crrev.com/c/320543). Prefix the name of the PHY clock with a '.' in the non-USB muxes to effectively remove the clock as input from these muxes. Signed-off-by: Matthias Kaehlcke <mka@xxxxxxxxxxxx> --- drivers/clk/rockchip/clk-rk3288.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/clk/rockchip/clk-rk3288.c b/drivers/clk/rockchip/clk-rk3288.c index 5a67b7869960..677bc5485201 100644 --- a/drivers/clk/rockchip/clk-rk3288.c +++ b/drivers/clk/rockchip/clk-rk3288.c @@ -200,8 +200,8 @@ PNAME(mux_aclk_cpu_src_p) = { "cpll_aclk_cpu", "gpll_aclk_cpu" }; PNAME(mux_pll_src_cpll_gpll_p) = { "cpll", "gpll" }; PNAME(mux_pll_src_npll_cpll_gpll_p) = { "npll", "cpll", "gpll" }; PNAME(mux_pll_src_cpll_gpll_npll_p) = { "cpll", "gpll", "npll" }; -PNAME(mux_pll_src_cpll_gpll_usb480m_p) = { "cpll", "gpll", "usbphy480m_src" }; -PNAME(mux_pll_src_cpll_gll_usb_npll_p) = { "cpll", "gpll", "usbphy480m_src", "npll" }; +PNAME(mux_pll_src_cpll_gpll_usb480m_p) = { "cpll", "gpll", ".usbphy480m_src" }; +PNAME(mux_pll_src_cpll_gll_usb_npll_p) = { "cpll", "gpll", ".usbphy480m_src", "npll" }; PNAME(mux_mmc_src_p) = { "cpll", "gpll", "xin24m", "xin24m" }; PNAME(mux_i2s_pre_p) = { "i2s_src", "i2s_frac", "ext_i2s", "xin12m" }; -- 2.21.0.392.gf8f6787159e-goog _______________________________________________ Linux-rockchip mailing list Linux-rockchip@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/linux-rockchip
