在 2020/7/8 下午10:45, Johan Jonker 写道:
The rk3328 uart2 port is used as boot console and to debug. During the boot pclk_uart2 is disabled by a clk_disable_unused initcall. Fix the uart2 function by marking pclk_uart2 as critical on rk3328. Also add sclk_uart2 as that is needed for the same DT node.Signed-off-by: Johan Jonker <jbx6...@gmail.com> --- drivers/clk/rockchip/clk-rk3328.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/clk/rockchip/clk-rk3328.c b/drivers/clk/rockchip/clk-rk3328.c index c186a1985..cb7749cb7 100644 --- a/drivers/clk/rockchip/clk-rk3328.c +++ b/drivers/clk/rockchip/clk-rk3328.c @@ -875,6 +875,8 @@ static const char *const rk3328_critical_clocks[] __initconst = { "aclk_gmac_niu", "pclk_gmac_niu", "pclk_phy_niu", + "pclk_uart2", + "sclk_uart2", };
Not need to mark the uart2 as critical clocks, the uart clk will enabled by uart driver probe(dw8250_probe()).
For your question, Please check the uart2 dts node "status = okay". Or You can send me the complete log, I check the status of uart2.
static void __init rk3328_clk_init(struct device_node *np)
