diff options
| -rw-r--r-- | src/soc/mediatek/common/dsi.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/src/soc/mediatek/common/dsi.c b/src/soc/mediatek/common/dsi.c index 3b9acd0ddc..73dacef33b 100644 --- a/src/soc/mediatek/common/dsi.c +++ b/src/soc/mediatek/common/dsi.c @@ -10,6 +10,9 @@ #include <string.h> #include <timer.h> +#define MIN_HFP_BYTE 2 +#define MIN_HBP_BYTE 2 + static unsigned int mtk_dsi_get_bits_per_pixel(u32 format) { switch (format) { @@ -165,8 +168,8 @@ static void mtk_dsi_config_vdo_timing(u32 mode_flags, u32 format, u32 lanes, u32 hsync_active_byte; u32 hbp; u32 hfp; - u32 hbp_byte; - u32 hfp_byte; + s32 hbp_byte; + s32 hfp_byte; u32 vbp_byte; u32 vfp_byte; u32 bytes_per_pixel; @@ -215,6 +218,21 @@ static void mtk_dsi_config_vdo_timing(u32 mode_flags, u32 format, u32 lanes, "the panel may not work properly.\n"); } + if (hfp_byte + hbp_byte < MIN_HFP_BYTE + MIN_HBP_BYTE) { + printk(BIOS_ERR, "Calculated hfp_byte and hbp_byte are too small, " + "the panel may not work properly.\n"); + } else if (hfp_byte < MIN_HFP_BYTE) { + printk(BIOS_NOTICE, "Calculated hfp_byte is too small, " + "adjust it to the minimum value.\n"); + hbp_byte -= MIN_HFP_BYTE - hfp_byte; + hfp_byte = MIN_HFP_BYTE; + } else if (hbp_byte < MIN_HBP_BYTE) { + printk(BIOS_NOTICE, "Calculated hbp_byte is too small, " + "adjust it to the minimum value.\n"); + hfp_byte -= MIN_HBP_BYTE - hbp_byte; + hbp_byte = MIN_HBP_BYTE; + } + write32(&dsi0->dsi_hsa_wc, hsync_active_byte); write32(&dsi0->dsi_hbp_wc, hbp_byte); write32(&dsi0->dsi_hfp_wc, hfp_byte); |