diff options
| author | Raphael Gallais-Pou <[email protected]> | 2025-09-04 14:53:08 +0200 |
|---|---|---|
| committer | Tom Rini <[email protected]> | 2025-11-17 10:43:43 -0600 |
| commit | b3316f6053feb3be1a731536c250942606447ea9 (patch) | |
| tree | 07c45ca89672859b80d975075075963422a99869 /drivers | |
| parent | 16cfbbbe2b513f3c93474ca247b955a6ac281f1a (diff) | |
video: stm32: ltdc: support new hardware version for STM32MP25 SoC
STM32MP2 SoCs feature a new version of the LTDC IP. This new version
features a bus clock, as well as a 150MHz pad frequency. Add its
compatible to the list of device to probe and handle quirks. The new
hardware version features a bus clock.
Reviewed-by: Patrice Chotard <[email protected]>
Acked-by: Yannick Fertre <[email protected]>
Signed-off-by: Raphael Gallais-Pou <[email protected]>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/video/stm32/stm32_ltdc.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/drivers/video/stm32/stm32_ltdc.c b/drivers/video/stm32/stm32_ltdc.c index 0a062c8939d..efe9a00996e 100644 --- a/drivers/video/stm32/stm32_ltdc.c +++ b/drivers/video/stm32/stm32_ltdc.c @@ -262,6 +262,7 @@ static const u32 layer_regs_a2[] = { #define HWVER_10300 0x010300 #define HWVER_20101 0x020101 #define HWVER_40100 0x040100 +#define HWVER_40101 0x040101 enum stm32_ltdc_pix_fmt { PF_ARGB8888 = 0, /* ARGB [32 bits] */ @@ -529,7 +530,7 @@ static int stm32_ltdc_probe(struct udevice *dev) struct udevice *bridge = NULL; struct udevice *panel = NULL; struct display_timing timings; - struct clk pclk; + struct clk pclk, bclk; struct reset_ctl rst; ulong rate; int ret; @@ -540,7 +541,21 @@ static int stm32_ltdc_probe(struct udevice *dev) return -EINVAL; } - ret = clk_get_by_index(dev, 0, &pclk); + ret = clk_get_by_name(dev, "bus", &bclk); + if (ret) { + if (ret != -ENODATA) { + dev_err(dev, "bus clock get error %d\n", ret); + return ret; + } + } else { + ret = clk_enable(&bclk); + if (ret) { + dev_err(dev, "bus clock enable error %d\n", ret); + return ret; + } + } + + ret = clk_get_by_name(dev, "lcd", &pclk); if (ret) { dev_err(dev, "peripheral clock get error %d\n", ret); return ret; @@ -566,6 +581,7 @@ static int stm32_ltdc_probe(struct udevice *dev) priv->pix_fmt_hw = pix_fmt_a1; break; case HWVER_40100: + case HWVER_40101: priv->layer_regs = layer_regs_a2; priv->pix_fmt_hw = pix_fmt_a2; break; @@ -688,6 +704,8 @@ static int stm32_ltdc_bind(struct udevice *dev) static const struct udevice_id stm32_ltdc_ids[] = { { .compatible = "st,stm32-ltdc" }, + { .compatible = "st,stm32mp251-ltdc" }, + { .compatible = "st,stm32mp255-ltdc" }, { } }; |