who can help me, i want to display logo when power on my board, i do the follow steps:
1.vi board/freescale/mx6sabresd/mx6sabresd.c
i modify the follow struct to add my lvds lcd timming
struct display_info_t const displays[] = {{
.bus = -1
........
.pixfmt = IPU_PIX_FMT_RGB666,
........
.name = "CHIMEI-WXGA"
}},.........
2. enable lvds0, my lvds lcd connect to lvds0.
.................................
reg = IOMUXC_GPR2_BGREF_RRMODE_EXTERNAL_RES
| IOMUXC_GPR2_DI1_VS_POLARITY_ACTIVE_LOW
| IOMUXC_GPR2_DI0_VS_POLARITY_ACTIVE_LOW
| IOMUXC_GPR2_BIT_MAPPING_CH1_SPWG
| IOMUXC_GPR2_DATA_WIDTH_CH1_18BIT
//| IOMUXC_GPR2_DATA_WIDTH_CH1_24BIT
| IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG
| IOMUXC_GPR2_DATA_WIDTH_CH0_18BIT
//| IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT
//| IOMUXC_GPR2_LVDS_CH0_MODE_DISABLED
| IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0
//| IOMUXC_GPR2_LVDS_CH1_MODE_ENABLED_DI0;
| IOMUXC_GPR2_LVDS_CH1_MODE_ENABLED_DI0;
writel(reg, &iomux->gpr[2]);
reg = readl(&iomux->gpr[3]);
//reg = (reg & ~(IOMUXC_GPR3_LVDS1_MUX_CTL_MASK
reg = (reg & ~(IOMUXC_GPR3_LVDS0_MUX_CTL_MASK
| IOMUXC_GPR3_LVDS1_MUX_CTL_MASK
| IOMUXC_GPR3_HDMI_MUX_CTL_MASK))
| (IOMUXC_GPR3_MUX_SRC_IPU1_DI0
<< IOMUXC_GPR3_LVDS1_MUX_CTL_OFFSET)
| (IOMUXC_GPR3_MUX_SRC_IPU1_DI0
<< IOMUXC_GPR3_LVDS0_MUX_CTL_OFFSET);
writel(reg, &iomux->gpr[3]);
.................................
but the i found the error "Unable to allocate freamebuffer memory", and i can't get the logo display. who can help me ?
Hi leavs
please check that following patch is included
[U-Boot] [PATCH v2] mxc_ipuv3: fix memory alignment of framebuffer
if that does not help please post this on uboot mail list
Best regards
igor
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Hi igorpadykov ,
Thanks for your reply, I had checked it, my code had been patched, but it's not work.