From dda454e933c636b225eef325f5f2b815ed01ac2e Mon Sep 17 00:00:00 2001 From: Adam Ford Date: Tue, 18 Mar 2025 18:38:33 -0500 Subject: [PATCH] serial: mxc: Support bulk enabling clocks Depending on the platform, there may be multiple clock sources required to enable a UART. Use the bulk functions to get and enable the clocks when the UART probes. This can facilitate the removal of functions to manually enable the clock. This is made dependent on CLK_CCF which is used on imx6q, imx8m[mnqp], several imxrt, imx9. If/when the UART clock registration is done for older boards, this limitation could be updated. Signed-off-by: Adam Ford Reviewed-by: Peng Fan --- drivers/serial/serial_mxc.c | 11 +++++++++++ include/dm/platform_data/serial_mxc.h | 3 +++ 2 files changed, 14 insertions(+) diff --git a/drivers/serial/serial_mxc.c b/drivers/serial/serial_mxc.c index c5fd740be4d..28f4435d01d 100644 --- a/drivers/serial/serial_mxc.c +++ b/drivers/serial/serial_mxc.c @@ -3,6 +3,7 @@ * (c) 2007 Sascha Hauer */ +#include #include #include #include @@ -312,7 +313,17 @@ int mxc_serial_setbrg(struct udevice *dev, int baudrate) static int mxc_serial_probe(struct udevice *dev) { struct mxc_serial_plat *plat = dev_get_plat(dev); +#if CONFIG_IS_ENABLED(CLK_CCF) + int ret; + ret = clk_get_bulk(dev, &plat->clks); + if (ret) + return ret; + + ret = clk_enable_bulk(&plat->clks); + if (ret) + return ret; +#endif _mxc_serial_init(plat->reg, plat->use_dte); return 0; diff --git a/include/dm/platform_data/serial_mxc.h b/include/dm/platform_data/serial_mxc.h index cc59eeb1dd1..52657aa3deb 100644 --- a/include/dm/platform_data/serial_mxc.h +++ b/include/dm/platform_data/serial_mxc.h @@ -9,6 +9,9 @@ /* Information about a serial port */ struct mxc_serial_plat { struct mxc_uart *reg; /* address of registers in physical memory */ +#if CONFIG_IS_ENABLED(CLK_CCF) + struct clk_bulk clks; +#endif bool use_dte; }; -- 2.39.5