From 4d436d59150c630de42845987ba7c7371aef1cd4 Mon Sep 17 00:00:00 2001 From: Ye Li Date: Mon, 13 Aug 2018 01:49:19 -0700 Subject: MLK-19157 imx8mm_evk: Disable dsi panel before booting kernel Pull down the DSI_EN gpio to disable mipi dsi panel before booting kernel. This avoids display full yellow screen before kernel mipi driver probes the device. For MIPI2HDMI card, this DSI_EN gpio is not used. So nothing impact to it. Signed-off-by: Ye Li (cherry picked from commit e73adc9a139f2e8bb92bda1631fa2f2391a8a5e3) --- board/freescale/imx8mm_evk/imx8mm_evk.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/board/freescale/imx8mm_evk/imx8mm_evk.c b/board/freescale/imx8mm_evk/imx8mm_evk.c index 43b49c9a42..f0d86771ca 100644 --- a/board/freescale/imx8mm_evk/imx8mm_evk.c +++ b/board/freescale/imx8mm_evk/imx8mm_evk.c @@ -660,6 +660,12 @@ void do_enable_mipi_led(struct display_info_t const *dev) imx_mipi_dsi_bridge_attach(&rm67191_dev); /* attach rm67191 device */ } +void board_quiesce_devices(void) +{ + gpio_request(IMX_GPIO_NR(1, 8), "DSI EN"); + gpio_direction_output(IMX_GPIO_NR(1, 8), 0); +} + struct display_info_t const displays[] = {{ .bus = LCDIF_BASE_ADDR, .addr = 0, -- cgit v1.2.3