71c255f594
This commit adds supports for building buildroot kernel + rootfs for MT8173 Elm board, also known as Chromebook Elm (https://www.acer.com/ac/en/US/content/series/acerchromebookr13). Though Chrome-OS is officially supproted on this board, the mainline kernel works as well (benchmarks + conformance), and so the 5.9 kernel is used. As the 5.9 kernel isn't yet released, we use the 5.9-rc5 for now, which will be up-revd to 5.9 once its released. Using the mainline kernel means that we have to apply certain patches to get the HDMI screen working. These patches are lying in the "drm-misc-next" list and will make it to the kernel after 5.9. At that time, we will remove the patches and point Buildroot to use the latest kernel (hopefully, 5.10). This commit also adds an ITS file (for creating FIT images), an ARGS file (for providing kernel args) and a "sign.sh" script to generate signed kernel images. Though the "sign.sh" is very similar to the coresponding file under board/chromebook/snow, it cannot be shared between both boards, as the script requires access to the board specific its / args file. Additionally a readme & defconfig is added to help the user get started. Signed-off-by: Bilal Wasim <bilalwasim676@gmail.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
36 lines
1.3 KiB
Diff
36 lines
1.3 KiB
Diff
From 510d0ad0ce1b51c072309ba12dfb024fc2c3dbac Mon Sep 17 00:00:00 2001
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From: Enric Balletbo i Serra <enric.balletbo@collabora.com>
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Date: Wed, 26 Aug 2020 10:15:22 +0200
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Subject: [PATCH 1/5] drm/bridge_connector: Set default status connected for
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eDP connectors
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In an eDP application, HPD is not required and on most bridge chips
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useless. If HPD is not used, we need to set initial status as connected,
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otherwise the connector created by the drm_bridge_connector API remains
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in an unknown state.
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Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Acked-by: Sam Ravnborg <sam@ravnborg.org>
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Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
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Reviewed-by: Bilal Wasim <bwasim.lkml@gmail.com>
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Tested-by: Bilal Wasim <bwasim.lkml@gmail.com>
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---
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drivers/gpu/drm/drm_bridge_connector.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/drivers/gpu/drm/drm_bridge_connector.c b/drivers/gpu/drm/drm_bridge_connector.c
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index c6994fe673f3..a58cbde59c34 100644
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--- a/drivers/gpu/drm/drm_bridge_connector.c
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+++ b/drivers/gpu/drm/drm_bridge_connector.c
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@@ -187,6 +187,7 @@ drm_bridge_connector_detect(struct drm_connector *connector, bool force)
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case DRM_MODE_CONNECTOR_DPI:
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case DRM_MODE_CONNECTOR_LVDS:
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case DRM_MODE_CONNECTOR_DSI:
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+ case DRM_MODE_CONNECTOR_eDP:
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status = connector_status_connected;
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break;
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default:
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--
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2.25.1
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