Unable to allocate framebuffer memory in U-boot

leavs — Wed, 22 Jun 2016 07:00:39 GMT

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 ?

Re: Unable to allocate framebuffer memory in U-boot

igorpadykov — Wed, 22 Jun 2016 11:46:07 GMT

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

U-Boot Info Page

Best regards

igor

-----------------------------------------------------------------------------------------------------------------------

Note: If this post answers your question, please click the Correct Answer button. Thank you!

-----------------------------------------------------------------------------------------------------------------------

Re: Unable to allocate framebuffer memory in U-boot

leavs — Thu, 23 Jun 2016 02:36:37 GMT

Hi igorpadykov ,

Thanks for your reply, I had checked it, my code had been patched, but it's not work.

topic Re: Unable to allocate framebuffer memory in U-boot in i.MX Processors

Unable to allocate framebuffer memory in U-boot

Re: Unable to allocate framebuffer memory in U-boot

Re: Unable to allocate framebuffer memory in U-boot