5872633b9d
Adds latest 6.6 patches from the Raspberry Pi repository. These patches were generated from: https://github.com/raspberrypi/linux/commits/rpi-6.6.y/ With the following command: git format-patch -N v6.6.83..HEAD (HEAD -> 08d4e8f52256bd422d8a1f876411603f627d0a82) Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> (cherry picked from commit 251f76c1c67d62c585d799c38dab31e1385d2ad5)
30 lines
787 B
Diff
30 lines
787 B
Diff
From 54a442deb925c37346abbbcc566234757925910c Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.com>
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Date: Mon, 3 Feb 2025 17:50:20 +0000
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Subject: [PATCH] spi: dw: Wait for idle after TX
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If this is a DMA transfer, and if there is no simultaneous RX transfer,
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wait for the interface to go idle before reporting that TX is done.
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Link: https://forums.raspberrypi.com/viewtopic.php?t=383027
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Signed-off-by: Phil Elwell <phil@raspberrypi.com>
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---
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drivers/spi/spi-dw-dma.c | 5 +++++
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1 file changed, 5 insertions(+)
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--- a/drivers/spi/spi-dw-dma.c
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+++ b/drivers/spi/spi-dw-dma.c
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@@ -304,6 +304,11 @@ static int dw_spi_dma_wait_tx_done(struc
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return -EIO;
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}
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+ if (!xfer->rx_buf) {
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+ while (dw_readl(dws, DW_SPI_SR) & DW_SPI_SR_BUSY)
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+ cpu_relax();
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+ }
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+
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return 0;
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}
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