Add imx8mqevk machine that uses etnaviv

To enable debugging/development of the etnaviv driver against the
GC7000L GPU in the i.MX8MQ, add a "imx8mqevk" template that uses
etnaviv instead of Vivante.  Since there seem to be some issues
with respect to GPU hangs and resulting graphical corruption, the
existing "imx8mqevk-viv" template that uses Vivante has been
retained for now.

Bug-AGL: SPEC-3520

Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Change-Id: If5b84c6021994cce0f30410985b1ec4678e718ef
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/meta-agl/+/25058
Tested-by: Jenkins Job builder account <agl-jobbuilder@automotivelinux.org>
ci-image-build: Jenkins Job builder account <agl-jobbuilder@automotivelinux.org>
ci-image-boot-test: Jenkins Job builder account <agl-jobbuilder@automotivelinux.org>
Reviewed-by: Walter Lozano <walter.lozano@collabora.com>
Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>

4 files changed, 63 insertions, 1 deletions

diff --git a/meta-agl-bsp/meta-freescale-layer/recipes-kernel/linux/linux-fslc-imx/0001-enable-mhdp-with-etnaviv.patch b/meta-agl-bsp/meta-freescale-layer/recipes-kernel/linux/linux-fslc-imx/0001-enable-mhdp-with-etnaviv.patch
new file mode 100644
index 000000000..23ca0475a
--- /dev/null
+++ b/meta-agl-bsp/meta-freescale-layer/recipes-kernel/linux/linux-fslc-imx/0001-enable-mhdp-with-etnaviv.patch
@@ -0,0 +1,23 @@
+Tweak MHDP driver Kconfig so it can be enabled with etnaviv
+
+The MHDP driver is needed for using HDMI on the i.MX8MQ EVK, tweak its
+Kconfig entry so that it can be enabled when using etnaviv, not just
+Vivante.
+
+Upstream-Status: pending
+Signed-off-by: Scott Murray <scott.murray@konsulko.com>
+---
+
+diff --git a/drivers/gpu/drm/imx/Kconfig b/drivers/gpu/drm/imx/Kconfig
+index 63d5f1b532ee..a18ba56aa218 100644
+--- a/drivers/gpu/drm/imx/Kconfig
++++ b/drivers/gpu/drm/imx/Kconfig
+@@ -85,7 +85,7 @@ config DRM_IMX_CDNS_MHDP
+ 	select DRM_CDNS_DP
+ 	select DRM_CDNS_HDMI
+ 	select DRM_CDNS_AUDIO
+-	depends on DRM_IMX
++	depends on DRM_IMX || DRM_ETNAVIV
+ 	help
+ 	  Choose this if you want to use HDMI on i.MX8.
+ 
diff --git a/meta-agl-bsp/meta-freescale-layer/recipes-kernel/linux/linux-fslc-imx/0002-dts-enable-etnaviv.patch b/meta-agl-bsp/meta-freescale-layer/recipes-kernel/linux/linux-fslc-imx/0002-dts-enable-etnaviv.patch
new file mode 100644
index 000000000..4ce9b9d38
--- /dev/null
+++ b/meta-agl-bsp/meta-freescale-layer/recipes-kernel/linux/linux-fslc-imx/0002-dts-enable-etnaviv.patch
@@ -0,0 +1,23 @@
+Enable etnaviv support in i.MX8MQ EVK devicetree
+
+Some further investigation is required into how to manage this upstream
+in meta-freescale, as it is not required for the i.MX6 platforms AFAIK.
+
+Upstream-Status: pending
+
+Signed-off-by: Scott Murray <scott.murray@konsulko.com>
+---
+
+diff --git a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
+index f2a7e4069a0d..c0b6c5052656 100755
+--- a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
++++ b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
+@@ -1074,7 +1074,7 @@
+ 	status = "okay";
+ };
+ 
+-&gpu3d {
++&gpu {
+ 	status = "okay";
+ };
+ 
diff --git a/meta-agl-bsp/meta-freescale-layer/recipes-kernel/linux/linux-fslc-imx/etnaviv.cfg b/meta-agl-bsp/meta-freescale-layer/recipes-kernel/linux/linux-fslc-imx/etnaviv.cfg
new file mode 100644
index 000000000..35602c6d8
--- /dev/null
+++ b/meta-agl-bsp/meta-freescale-layer/recipes-kernel/linux/linux-fslc-imx/etnaviv.cfg
@@ -0,0 +1,4 @@
+CONFIG_DRM_IMX=n
+CONFIG_DRM_IMX_CDNS_MHDP=y
+CONFIG_DRM_ROCKCHIP=n
+CONFIG_DRM_ETNAVIV=y
diff --git a/meta-agl-bsp/meta-freescale-layer/recipes-kernel/linux/linux-fslc-imx_%.bbappend b/meta-agl-bsp/meta-freescale-layer/recipes-kernel/linux/linux-fslc-imx_%.bbappend
index 33e72bf7d..549ba3994 100644
--- a/meta-agl-bsp/meta-freescale-layer/recipes-kernel/linux/linux-fslc-imx_%.bbappend
+++ b/meta-agl-bsp/meta-freescale-layer/recipes-kernel/linux/linux-fslc-imx_%.bbappend
@@ -1,7 +1,15 @@
-FILESEXTRAPATHS_prepend := "${THISDIR}/files:"
+FILESEXTRAPATHS_prepend := "${THISDIR}/${BPN}:${THISDIR}/files:"
 
 require recipes-kernel/linux/linux-agl.inc
 
+# These patches and the configuration fragment below will need to be
+# revisited if/when using IMX_DEFAULT_BSP = "mainline" with i.MX8
+# becomes more feasible with upstream meta-freescale.
+SRC_URI_append_etnaviv = " \
+    file://0001-enable-mhdp-with-etnaviv.patch \
+    file://0002-dts-enable-etnaviv.patch \
+"
+
 # Make sure these are enabled so that AGL configurations work
 SRC_URI_append = " file://tmpfs.cfg"
 KERNEL_CONFIG_FRAGMENTS_append = " ${WORKDIR}/tmpfs.cfg"
@@ -18,6 +26,10 @@ KERNEL_CONFIG_FRAGMENTS_append = " ${WORKDIR}/cfg80211.cfg"
 SRC_URI_append_imx8mqevk = " file://imx8mq-evkb.cfg"
 KERNEL_CONFIG_FRAGMENTS_append_imx8mqevk = " ${WORKDIR}/imx8mq-evkb.cfg"
 
+# Build in etnaviv if required
+SRC_URI_append_etnaviv = " file://etnaviv.cfg"
+KERNEL_CONFIG_FRAGMENTS_append_etnaviv = " ${WORKDIR}/etnaviv.cfg"
+
 # Turn off a couple of things enabled by default by Freescale
 # (lock debugging and userspace firmware loader fallback)
 SRC_URI_append = " file://fixups.cfg"