diff options
Diffstat (limited to 'arch/arm/mach-imx/imx8ulp/clock.c')
| -rw-r--r-- | arch/arm/mach-imx/imx8ulp/clock.c | 50 |
1 files changed, 19 insertions, 31 deletions
diff --git a/arch/arm/mach-imx/imx8ulp/clock.c b/arch/arm/mach-imx/imx8ulp/clock.c index 2898c8b96c..17dff404fb 100644 --- a/arch/arm/mach-imx/imx8ulp/clock.c +++ b/arch/arm/mach-imx/imx8ulp/clock.c @@ -183,37 +183,20 @@ void clock_init_late(void) */ cgc1_pll3_init(540672000); - if (IS_ENABLED(CONFIG_IMX8ULP_LD_MODE) || IS_ENABLED(CONFIG_IMX8ULP_ND_MODE)) { - pcc_clock_enable(4, SDHC0_PCC4_SLOT, false); - pcc_clock_sel(4, SDHC0_PCC4_SLOT, PLL3_PFD2_DIV2); - pcc_clock_enable(4, SDHC0_PCC4_SLOT, true); - pcc_reset_peripheral(4, SDHC0_PCC4_SLOT, false); - - pcc_clock_enable(4, SDHC1_PCC4_SLOT, false); - pcc_clock_sel(4, SDHC1_PCC4_SLOT, PLL3_PFD2_DIV2); - pcc_clock_enable(4, SDHC1_PCC4_SLOT, true); - pcc_reset_peripheral(4, SDHC1_PCC4_SLOT, false); - - pcc_clock_enable(4, SDHC2_PCC4_SLOT, false); - pcc_clock_sel(4, SDHC2_PCC4_SLOT, PLL3_PFD2_DIV2); - pcc_clock_enable(4, SDHC2_PCC4_SLOT, true); - pcc_reset_peripheral(4, SDHC2_PCC4_SLOT, false); - } else { - pcc_clock_enable(4, SDHC0_PCC4_SLOT, false); - pcc_clock_sel(4, SDHC0_PCC4_SLOT, PLL3_PFD1_DIV2); - pcc_clock_enable(4, SDHC0_PCC4_SLOT, true); - pcc_reset_peripheral(4, SDHC0_PCC4_SLOT, false); - - pcc_clock_enable(4, SDHC1_PCC4_SLOT, false); - pcc_clock_sel(4, SDHC1_PCC4_SLOT, PLL3_PFD2_DIV1); - pcc_clock_enable(4, SDHC1_PCC4_SLOT, true); - pcc_reset_peripheral(4, SDHC1_PCC4_SLOT, false); - - pcc_clock_enable(4, SDHC2_PCC4_SLOT, false); - pcc_clock_sel(4, SDHC2_PCC4_SLOT, PLL3_PFD2_DIV1); - pcc_clock_enable(4, SDHC2_PCC4_SLOT, true); - pcc_reset_peripheral(4, SDHC2_PCC4_SLOT, false); - } + pcc_clock_enable(4, SDHC0_PCC4_SLOT, false); + pcc_clock_sel(4, SDHC0_PCC4_SLOT, PLL3_PFD3_DIV1); /* 389M for OD, 194M for LD/ND*/ + pcc_clock_enable(4, SDHC0_PCC4_SLOT, true); + pcc_reset_peripheral(4, SDHC0_PCC4_SLOT, false); + + pcc_clock_enable(4, SDHC1_PCC4_SLOT, false); + pcc_clock_sel(4, SDHC1_PCC4_SLOT, PLL3_PFD3_DIV2); /* 194M for OD, 97M for LD/ND */ + pcc_clock_enable(4, SDHC1_PCC4_SLOT, true); + pcc_reset_peripheral(4, SDHC1_PCC4_SLOT, false); + + pcc_clock_enable(4, SDHC2_PCC4_SLOT, false); + pcc_clock_sel(4, SDHC2_PCC4_SLOT, PLL3_PFD3_DIV2); /* 194M for OD, 97M for LD/ND*/ + pcc_clock_enable(4, SDHC2_PCC4_SLOT, true); + pcc_reset_peripheral(4, SDHC2_PCC4_SLOT, false); /* enable MU0_MUB clock before access the register of MU0_MUB */ pcc_clock_enable(3, MU0_B_PCC3_SLOT, true); @@ -432,6 +415,8 @@ void reset_lcdclk(void) pcc_reset_peripheral(5, DCNANO_PCC5_SLOT, true); } +/* PLL4 PFD0 max frequency */ +#define PLL4_PFD0_MAX_RATE 600000 /*khz*/ void mxs_set_lcdclk(u32 base_addr, u32 freq_in_khz) { u8 pcd, best_pcd = 0; @@ -450,6 +435,9 @@ void mxs_set_lcdclk(u32 base_addr, u32 freq_in_khz) for (div = 1; div <= 64; div++) { parent_rate = pll4_rate; parent_rate = parent_rate * 18 / pfd; + if (parent_rate > PLL4_PFD0_MAX_RATE) + continue; + parent_rate = parent_rate / div; for (pcd = 0; pcd < 8; pcd++) { |