Commit 775c5bd9588cc7895dfbfbcdcce91f84146b09a3
1 parent
b28f2b7fbe
Exists in
smarc_8mq-imx_v2020.04_5.4.24_2.1.0
and in
1 other branch
MLK-23964-13 imx8mq: Add power and clock settings for HDMI splash screen
Implement the power on and clock settings for DCSS and HDMI drivers Signed-off-by: Ye Li <ye.li@nxp.com> (cherry picked from commit e97703d2e708f3e44c1276b46b9293fc24ba7a73)
Showing 2 changed files with 27 additions and 0 deletions Side-by-side Diff
arch/arm/mach-imx/imx8m/clock_imx8mq.c
| ... | ... | @@ -862,6 +862,20 @@ |
| 862 | 862 | } |
| 863 | 863 | #endif |
| 864 | 864 | |
| 865 | +int imx8m_dcss_clock_init(u32 pixclk) | |
| 866 | +{ | |
| 867 | + /* b_clk: bus_clk_root(4) sel 2nd input source and | |
| 868 | + pre_div to 0; output should be 800M */ | |
| 869 | + clock_set_target_val(DISPLAY_AXI_CLK_ROOT, CLK_ROOT_ON |CLK_ROOT_SOURCE_SEL(2)); | |
| 870 | + | |
| 871 | + /* rtr_clk: bus_clk_root(6) sel 1st input source | |
| 872 | + and pre_div to 1; output should be 400M */ | |
| 873 | + clock_set_target_val(DISPLAY_RTRM_CLK_ROOT, | |
| 874 | + CLK_ROOT_ON |CLK_ROOT_SOURCE_SEL(1) |CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV2)); | |
| 875 | + | |
| 876 | + return 0; | |
| 877 | +} | |
| 878 | + | |
| 865 | 879 | /* |
| 866 | 880 | * Dump some clockes. |
| 867 | 881 | */ |
arch/arm/mach-imx/imx8m/soc.c
| ... | ... | @@ -1266,4 +1266,17 @@ |
| 1266 | 1266 | } |
| 1267 | 1267 | #endif |
| 1268 | 1268 | #endif |
| 1269 | + | |
| 1270 | +#ifdef CONFIG_IMX8MQ | |
| 1271 | +int imx8m_dcss_power_init(void) | |
| 1272 | +{ | |
| 1273 | + /* Enable the display CCGR before power on */ | |
| 1274 | + clock_enable(CCGR_DISPLAY, 1); | |
| 1275 | + | |
| 1276 | + writel(0x0000ffff, 0x303A00EC); /*PGC_CPU_MAPPING */ | |
| 1277 | + setbits_le32(0x303A00F8, 0x1 << 10); /*PU_PGC_SW_PUP_REQ : disp was 10 */ | |
| 1278 | + | |
| 1279 | + return 0; | |
| 1280 | +} | |
| 1281 | +#endif |