The CONFIG_SPL_BOARD_INIT lets SPL common code call spl_board_init() during the SPL start up. On this particular system, spl_board_init() is used to reconfigure GIC clock parent to PLL2 500M, which is the configuration expected by the Linux kernel. Enable SPL_BOARD_INIT and fill in the GIC clock configuration code.

Set GIC clock to 500 MHz for OD VDD_SOC. Kernel driver does not allow to change it. Should set the clock after PMIC setting done. Default is 400 MHz (system_pll1_800m with div = 2) set by ROM for ND VDD_SOC.

Signed-off-by: Marek Vasut marex@denx.de --- Cc: Fabio Estevam festevam@denx.de Cc: Stefano Babic sbabic@denx.de --- V2: Duplicate code comment into commit message --- board/data_modul/imx8mp_edm_sbc/spl.c | 13 +++++++++++++ configs/imx8mp_data_modul_edm_sbc_defconfig | 1 + 2 files changed, 14 insertions(+)

diff --git a/board/data_modul/imx8mp_edm_sbc/spl.c b/board/data_modul/imx8mp_edm_sbc/spl.c index a3600c8568a..cc2d253e391 100644 --- a/board/data_modul/imx8mp_edm_sbc/spl.c +++ b/board/data_modul/imx8mp_edm_sbc/spl.c @@ -80,6 +80,19 @@ int data_modul_imx_edm_sbc_board_power_init(void) return 0; }

+void spl_board_init(void) +{ + /* + * Set GIC clock to 500 MHz for OD VDD_SOC. Kernel driver does not + * allow to change it. Should set the clock after PMIC setting done. + * Default is 400 MHz (system_pll1_800m with div = 2) set by ROM for + * ND VDD_SOC. + */ + clock_enable(CCGR_GIC, 0); + clock_set_target_val(GIC_CLK_ROOT, CLK_ROOT_ON | CLK_ROOT_SOURCE_SEL(5)); + clock_enable(CCGR_GIC, 1); +} + int spl_board_boot_device(enum boot_device boot_dev_spl) { if (boot_dev_spl == SPI_NOR_BOOT) /* SPI NOR */ diff --git a/configs/imx8mp_data_modul_edm_sbc_defconfig b/configs/imx8mp_data_modul_edm_sbc_defconfig index a55630c1a6d..d29bc986267 100644 --- a/configs/imx8mp_data_modul_edm_sbc_defconfig +++ b/configs/imx8mp_data_modul_edm_sbc_defconfig @@ -56,6 +56,7 @@ CONFIG_SPL_MAX_SIZE=0x25000 CONFIG_SPL_HAS_BSS_LINKER_SECTION=y CONFIG_SPL_BSS_START_ADDR=0x96fc00 CONFIG_SPL_BSS_MAX_SIZE=0x400 +CONFIG_SPL_BOARD_INIT=y CONFIG_SPL_BOOTROM_SUPPORT=y # CONFIG_SPL_RAW_IMAGE_SUPPORT is not set # CONFIG_SPL_SHARES_INIT_SP_ADDR is not set