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36 lines
1.1 KiB
Diff
36 lines
1.1 KiB
Diff
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From 93ae2b9f6c792d17b691e23e4ba3cf07867e1df1 Mon Sep 17 00:00:00 2001
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From: Jack Andersen <jackoalan@gmail.com>
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Date: Fri, 26 May 2023 12:19:19 -0700
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Subject: [PATCH 0474/1085] panel-sitronix-st7701: Fix panel prepare over SPI
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A DSI write is issued in st7701_prepare even when the probed panel
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runs on SPI. In practice, this results in a panic with the
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vc4-kms-dpi-hyperpixel2r overlay active.
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Perform the equivalent write over SPI in this case.
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Signed-off-by: Jack Andersen <jackoalan@gmail.com>
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---
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drivers/gpu/drm/panel/panel-sitronix-st7701.c | 10 +++++++++-
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1 file changed, 9 insertions(+), 1 deletion(-)
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--- a/drivers/gpu/drm/panel/panel-sitronix-st7701.c
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+++ b/drivers/gpu/drm/panel/panel-sitronix-st7701.c
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@@ -605,7 +605,15 @@ static int st7701_prepare(struct drm_pan
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st7701->desc->gip_sequence(st7701);
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/* Disable Command2 */
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- st7701_switch_cmd_bkx(st7701, false, 0);
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+ switch (st7701->desc->interface) {
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+ case ST7701_CTRL_DSI:
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+ st7701_switch_cmd_bkx(st7701, false, 0);
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+ break;
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+ case ST7701_CTRL_SPI:
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+ ST7701_SPI(st7701, DSI_CMD2BKX_SEL,
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+ 0x177, 0x101, 0x100, 0x100, SPI_CMD2BKX_SEL_NONE);
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+ break;
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+ }
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return 0;
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}
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