Subject: [PATCH] arm: imx8: factor out uart init code
New imx8 boards started adding duplicated UART init code. Factor out this to common function sc_pm_setup_uart().
Signed-off-by: Anatolij Gustschin agust@denx.de Cc: Peng Fan peng.fan@nxp.com
arch/arm/include/asm/arch-imx8/sys_proto.h | 2 ++ arch/arm/mach-imx/imx8/Makefile | 2 +- arch/arm/mach-imx/imx8/misc.c | 26 ++++++++++++++++++++++ board/freescale/imx8qm_mek/imx8qm_mek.c | 16 +++---------- board/freescale/imx8qxp_mek/imx8qxp_mek.c | 16 +++---------- 5 files changed, 35 insertions(+), 27 deletions(-) create mode 100644 arch/arm/mach-imx/imx8/misc.c
diff --git a/arch/arm/include/asm/arch-imx8/sys_proto.h b/arch/arm/include/asm/arch-imx8/sys_proto.h index 73ffaba7d5..3f5bbe9dcc 100644 --- a/arch/arm/include/asm/arch-imx8/sys_proto.h +++ b/arch/arm/include/asm/arch-imx8/sys_proto.h @@ -3,6 +3,7 @@
- Copyright 2018 NXP
*/
+#include <asm/arch/sci/sci.h> #include <asm/mach-imx/sys_proto.h> #include <linux/types.h>
@@ -17,3 +18,4 @@ struct pass_over_info_t {
enum boot_device get_boot_device(void); int print_bootinfo(void); +int sc_pm_setup_uart(sc_rsrc_t uart_rsrc, sc_pm_clock_rate_t clk_rate); diff --git a/arch/arm/mach-imx/imx8/Makefile b/arch/arm/mach-imx/imx8/Makefile index 31ad169ccf..92b5c56acb 100644 --- a/arch/arm/mach-imx/imx8/Makefile +++ b/arch/arm/mach-imx/imx8/Makefile @@ -4,4 +4,4 @@ # SPDX-License-Identifier: GPL-2.0+ #
-obj-y += cpu.o iomux.o +obj-y += cpu.o iomux.o misc.o diff --git a/arch/arm/mach-imx/imx8/misc.c b/arch/arm/mach-imx/imx8/misc.c new file mode 100644 index 0000000000..5fe23d2080 --- /dev/null +++ b/arch/arm/mach-imx/imx8/misc.c @@ -0,0 +1,26 @@ +// SPDX-License-Identifier: GPL-2.0+ +#include <common.h> +#include <asm/arch/sci/sci.h>
+int sc_pm_setup_uart(sc_rsrc_t uart_rsrc, sc_pm_clock_rate_t clk_rate) +{
- sc_pm_clock_rate_t rate = clk_rate;
- int ret;
- /* Power up UARTn */
- ret = sc_pm_set_resource_power_mode(-1, uart_rsrc,
SC_PM_PW_MODE_ON);
- if (ret)
return ret;- /* Set UARTn clock root to 'rate' MHz */
- ret = sc_pm_set_clock_rate(-1, uart_rsrc, 2, &rate);
- if (ret)
return ret;- /* Enable UARTn clock root */
- ret = sc_pm_clock_enable(-1, uart_rsrc, 2, true, false);
- if (ret)
return ret;- return 0;
+} diff --git a/board/freescale/imx8qm_mek/imx8qm_mek.c b/board/freescale/imx8qm_mek/imx8qm_mek.c index e69efc4dd6..249c29e0f2 100644 --- a/board/freescale/imx8qm_mek/imx8qm_mek.c +++ b/board/freescale/imx8qm_mek/imx8qm_mek.c @@ -34,21 +34,11 @@ static void setup_iomux_uart(void)
int board_early_init_f(void) {
- sc_pm_clock_rate_t rate = SC_80MHZ; int ret;
- /* Set UART0 clock root to 80 MHz */
- sc_pm_clock_rate_t rate = 80000000;
- /* Power up UART0 */
- ret = sc_pm_set_resource_power_mode(-1, SC_R_UART_0,
SC_PM_PW_MODE_ON);
if (ret)
return ret;ret = sc_pm_set_clock_rate(-1, SC_R_UART_0, 2, &rate);
if (ret)
return ret;/* Enable UART0 clock root */
ret = sc_pm_clock_enable(-1, SC_R_UART_0, 2, true, false);
- /* Set UART0 clock root to 80 MHz */
- ret = sc_pm_setup_uart(SC_R_UART_0, rate); if (ret) return ret;
diff --git a/board/freescale/imx8qxp_mek/imx8qxp_mek.c b/board/freescale/imx8qxp_mek/imx8qxp_mek.c index 63cd605b6a..1038f26d69 100644 --- a/board/freescale/imx8qxp_mek/imx8qxp_mek.c +++ b/board/freescale/imx8qxp_mek/imx8qxp_mek.c @@ -40,21 +40,11 @@ static void setup_iomux_uart(void)
int board_early_init_f(void) {
- sc_pm_clock_rate_t rate = SC_80MHZ; int ret;
- /* Set UART0 clock root to 80 MHz */
- sc_pm_clock_rate_t rate = 80000000;
- /* Power up UART0 */
- ret = sc_pm_set_resource_power_mode(-1, SC_R_UART_0,
SC_PM_PW_MODE_ON);
if (ret)
return ret;ret = sc_pm_set_clock_rate(-1, SC_R_UART_0, 2, &rate);
if (ret)
return ret;/* Enable UART0 clock root */
ret = sc_pm_clock_enable(-1, SC_R_UART_0, 2, true, false);
- /* Set UART0 clock root to 80 MHz */
- ret = sc_pm_setup_uart(SC_R_UART_0, rate); if (ret) return ret;
Reviewed-by: Peng Fan peng.fan@nxp.com
-- 2.17.1