8f9e91ad03
These patches were generated from: https://github.com/raspberrypi/linux/commits/rpi-6.12.y With the following command: git format-patch -N v6.12.27..HEAD (HEAD -> 8d3206ee456a5ecdf9ddbfd8e5e231e4f0cd716e) Exceptions: - (def)configs patches - github workflows patches - applied & reverted patches - readme patches - wireless patches Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
30 lines
852 B
Diff
30 lines
852 B
Diff
From 832a0cefbdbb8c78f3779cefb315d17ea8e9ad1b Mon Sep 17 00:00:00 2001
|
|
From: Phil Elwell <phil@raspberrypi.com>
|
|
Date: Mon, 3 Feb 2025 17:50:20 +0000
|
|
Subject: [PATCH] spi: dw: Wait for idle after TX
|
|
|
|
If this is a DMA transfer, and if there is no simultaneous RX transfer,
|
|
wait for the interface to go idle before reporting that TX is done.
|
|
|
|
Link: https://forums.raspberrypi.com/viewtopic.php?t=383027
|
|
|
|
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
|
|
---
|
|
drivers/spi/spi-dw-dma.c | 6 ++++++
|
|
1 file changed, 6 insertions(+)
|
|
|
|
--- a/drivers/spi/spi-dw-dma.c
|
|
+++ b/drivers/spi/spi-dw-dma.c
|
|
@@ -304,6 +304,12 @@ static int dw_spi_dma_wait_tx_done(struc
|
|
return -EIO;
|
|
}
|
|
|
|
+ if (!xfer->rx_buf) {
|
|
+ delay.value = dws->n_bytes * BITS_PER_BYTE;
|
|
+ while (dw_readl(dws, DW_SPI_SR) & DW_SPI_SR_BUSY)
|
|
+ spi_delay_exec(&delay, xfer);
|
|
+ }
|
|
+
|
|
return 0;
|
|
}
|
|
|