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