diff options
| author | Dario Binacchi | 2023-12-11 23:05:55 +0100 |
|---|---|---|
| committer | Patrice Chotard | 2023-12-15 15:41:23 +0100 |
| commit | 47256b040c61a08de6037954e15d4cba1d2a04a9 (patch) | |
| tree | 596f06b965b696b438a455830a69e42d89908523 /drivers/video | |
| parent | 88c938f8748665d0bf9c5a47eaee2072649bd099 (diff) | |
board: stm32f469-disco: add support to display
Add support to Orise Tech OTM8009A display on stm32f469-disco board.
It was necessary to retrieve the framebuffer address from the device tree
because the address returned by the video-uclass driver pointed to a memory
area that was not usable.
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/stm32/stm32_ltdc.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/video/stm32/stm32_ltdc.c b/drivers/video/stm32/stm32_ltdc.c index 6fd90e33919..4f60ba8ebee 100644 --- a/drivers/video/stm32/stm32_ltdc.c +++ b/drivers/video/stm32/stm32_ltdc.c @@ -495,6 +495,33 @@ static void stm32_ltdc_set_layer1(struct stm32_ltdc_priv *priv, ulong fb_addr) setbits_le32(priv->regs + LTDC_L1CR, LXCR_LEN); } +#if IS_ENABLED(CONFIG_TARGET_STM32F469_DISCOVERY) +static int stm32_ltdc_alloc_fb(struct udevice *dev) +{ + u32 sdram_size = gd->ram_size; + struct video_uc_plat *uc_plat = dev_get_uclass_plat(dev); + phys_addr_t cpu; + dma_addr_t bus; + u64 dma_size; + int ret; + + ret = dev_get_dma_range(dev, &cpu, &bus, &dma_size); + if (ret) { + dev_err(dev, "failed to get dma address\n"); + return ret; + } + + uc_plat->base = bus + sdram_size - ALIGN(uc_plat->size, uc_plat->align); + return 0; +} +#else +static inline int stm32_ltdc_alloc_fb(struct udevice *dev) +{ + /* Delegate framebuffer allocation to video-uclass */ + return 0; +} +#endif + static int stm32_ltdc_probe(struct udevice *dev) { struct video_uc_plat *uc_plat = dev_get_uclass_plat(dev); @@ -605,6 +632,10 @@ static int stm32_ltdc_probe(struct udevice *dev) priv->crop_h = timings.vactive.typ; priv->alpha = 0xFF; + ret = stm32_ltdc_alloc_fb(dev); + if (ret) + return ret; + dev_dbg(dev, "%dx%d %dbpp frame buffer at 0x%lx\n", timings.hactive.typ, timings.vactive.typ, VNBITS(priv->l2bpp), uc_plat->base); |