diff options
Diffstat (limited to 'src/soc/rockchip/rk3288/display.c')
| -rw-r--r-- | src/soc/rockchip/rk3288/display.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/src/soc/rockchip/rk3288/display.c b/src/soc/rockchip/rk3288/display.c index 306baad3b6..f3dfac1a86 100644 --- a/src/soc/rockchip/rk3288/display.c +++ b/src/soc/rockchip/rk3288/display.c @@ -39,6 +39,7 @@ void rk_display_init(device_t dev, u32 lcdbase, unsigned long fb_size) { struct edid edid; + uint32_t val; struct soc_rockchip_rk3288_config *conf = dev->chip_info; uint32_t lower = ALIGN_DOWN(lcdbase, MiB); uint32_t upper = ALIGN_UP(lcdbase + fb_size, MiB); @@ -58,7 +59,16 @@ void rk_display_init(device_t dev, u32 lcdbase, printk(BIOS_DEBUG, "Attempting to setup EDP display.\n"); rkclk_configure_edp(); rkclk_configure_vop_aclk(conf->vop_id, 192 * MHz); - rk_edp_init(conf->vop_id); + + /* grf_edp_ref_clk_sel: from internal 24MHz or 27MHz clock */ + write32(&rk3288_grf->soc_con12, RK_SETBITS(1 << 4)); + + /* select epd signal from vop0 or vop1 */ + val = (conf->vop_id == 1) ? RK_SETBITS(1 << 5) : + RK_CLRBITS(1 << 5); + write32(&rk3288_grf->soc_con6, val); + + rk_edp_init(); if (rk_edp_get_edid(&edid) == 0) { detected_mode = VOP_MODE_EDP; |