Hi Laurent, again About this topic, v5.15 was released, but it still has "No soundcards" issue. There is no dw-hdmi, thus no soundcards ... [ 1.431196] printk: console [ttySC0] enabled => [ 1.442432] rcar-du feb00000.display: failed to initialize DRM/KMS (-6) [ 1.481179] loop: module loaded ... [ 9.568307] ALSA device list: => [ 9.571446] No soundcards found. ... I re-start works for me if I reverted this patch -------------------------------- commit d0f44e0dac29aca3f85d238dfbcd2e52450b38dc Author: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx> Date: Mon May 25 07:05:26 2020 +0300 drm: rcar-du: dw-hdmi: Set output port number Report the DT output port number in dw_hdmi_plat_data to connect to the next bridge in the dw-hdmi driver. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx> Tested-by: Kieran Bingham <kieran.bingham@xxxxxxxxxxxxxxxx> # On V3U Reviewed-by: Kieran Bingham <kieran.bingham+renesas@xxxxxxxxxxxxxxxx> -------------------------------- ... [ 1.431130] printk: console [ttySC0] enabled => [ 1.442219] rcar-du feb00000.display: failed to initialize DRM/KMS (-6) => [ 1.451050] rcar-dw-hdmi fead0000.hdmi: Detected HDMI TX controller v2.01a with HDCP (DWC HDMI 2.0 TX PHY) => [ 1.461560] rcar-dw-hdmi fead0000.hdmi: registered DesignWare HDMI I2C bus driver [ 1.501043] loop: module loaded ... [ 9.180464] ALSA device list: => [ 9.183519] #0: rcar-sound ... Thank you for your help !! Best regards --- Kuninori Morimoto