diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.10/950-0564-drm-vc4-dsi-Add-configuration-for-BCM2711-DSI1.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.10/950-0564-drm-vc4-dsi-Add-configuration-for-BCM2711-DSI1.patch | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.10/950-0564-drm-vc4-dsi-Add-configuration-for-BCM2711-DSI1.patch b/target/linux/bcm27xx/patches-5.10/950-0564-drm-vc4-dsi-Add-configuration-for-BCM2711-DSI1.patch new file mode 100644 index 0000000000..14749219b0 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.10/950-0564-drm-vc4-dsi-Add-configuration-for-BCM2711-DSI1.patch @@ -0,0 +1,53 @@ +From 24b8230e039c6bef2dcc0ea4ca7cb5d2441570f1 Mon Sep 17 00:00:00 2001 +From: Dave Stevenson <dave.stevenson@raspberrypi.com> +Date: Thu, 3 Dec 2020 14:25:42 +0100 +Subject: [PATCH] drm/vc4: dsi: Add configuration for BCM2711 DSI1 + +Commit d0666be8ef9e8e65d4b7fabc1606ec51f61384c0 upstream. + +BCM2711 DSI1 doesn't have the issue with the ARM not being +able to write to the registers, therefore remove the DMA +workaround for that compatible string. + +Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> +Signed-off-by: Maxime Ripard <maxime@cerno.tech> +Link: https://patchwork.freedesktop.org/patch/msgid/20201203132543.861591-8-maxime@cerno.tech +--- + drivers/gpu/drm/vc4/vc4_dsi.c | 12 ++++++++++-- + 1 file changed, 10 insertions(+), 2 deletions(-) + +--- a/drivers/gpu/drm/vc4/vc4_dsi.c ++++ b/drivers/gpu/drm/vc4/vc4_dsi.c +@@ -1316,6 +1316,13 @@ static const struct drm_encoder_helper_f + .mode_fixup = vc4_dsi_encoder_mode_fixup, + }; + ++static const struct vc4_dsi_variant bcm2711_dsi1_variant = { ++ .port = 1, ++ .debugfs_name = "dsi1_regs", ++ .regs = dsi1_regs, ++ .nregs = ARRAY_SIZE(dsi1_regs), ++}; ++ + static const struct vc4_dsi_variant bcm2835_dsi0_variant = { + .port = 0, + .debugfs_name = "dsi0_regs", +@@ -1332,6 +1339,7 @@ static const struct vc4_dsi_variant bcm2 + }; + + static const struct of_device_id vc4_dsi_dt_match[] = { ++ { .compatible = "brcm,bcm2711-dsi1", &bcm2711_dsi1_variant }, + { .compatible = "brcm,bcm2835-dsi0", &bcm2835_dsi0_variant }, + { .compatible = "brcm,bcm2835-dsi1", &bcm2835_dsi1_variant }, + {} +@@ -1516,8 +1524,8 @@ static int vc4_dsi_bind(struct device *d + return -ENODEV; + } + +- /* DSI1 has a broken AXI slave that doesn't respond to writes +- * from the ARM. It does handle writes from the DMA engine, ++ /* DSI1 on BCM2835/6/7 has a broken AXI slave that doesn't respond to ++ * writes from the ARM. It does handle writes from the DMA engine, + * so set up a channel for talking to it. + */ + if (dsi->variant->broken_axi_workaround) { |