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X-Spam-Score: -2.1 (--) X-Spam-Report: Spam detection software, running on the system "bombadil.infradead.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Linux resets the LTDC on probe. Let's do the same in barebox, so a chainloaded barebox doesn't attempt reconfiguration of the DSI host while the LTDC is still streaming to it. Tested by chainloading the generic BL33 image on an STM32MP157C-DK2 and observing it doesn't hang when framebuffer support is enabled. 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Let's do the same in barebox, so a chainloaded barebox doesn't attempt reconfiguration of the DSI host while the LTDC is still streaming to it. Tested by chainloading the generic BL33 image on an STM32MP157C-DK2 and observing it doesn't hang when framebuffer support is enabled. Signed-off-by: Ahmad Fatoum --- drivers/video/stm32_ltdc.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/video/stm32_ltdc.c b/drivers/video/stm32_ltdc.c index 43d443788364..5165bbf01749 100644 --- a/drivers/video/stm32_ltdc.c +++ b/drivers/video/stm32_ltdc.c @@ -272,6 +272,10 @@ static int ltdc_probe(struct device *dev) if (IS_ERR(hw->pclk)) return dev_errp_probe(dev, hw->pclk, "peripheral clock get\n"); + ret = device_reset_us(dev, 10); + if (ret) + return dev_err_probe(dev, ret, "peripheral reset\n"); + for_each_available_child_of_node(dev->of_node, np) { struct ltdc_fb *priv; struct of_endpoint ep; -- 2.47.3