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ath79: add missing v5.4 SPI chipselect patch

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The patch was not applied to the v5.4 target, thus breaking Kernel 5.4
on devices with multiple flash chips attache to the SPI bus.

Fixes commit bd54e73954 ("ath79: set number of chipselect lines")

Signed-off-by: David Bauer <mail@david-bauer.net>
This commit is contained in:
David Bauer 2021-05-26 11:37:42 +02:00
parent 3e9318f3c0
commit 862bc9f597
1 changed files with 26 additions and 0 deletions
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26
target/linux/ath79/patches-5.4/412-spi-ath79-set-number-of-chipselect-lines.patch Normal file
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@ -0,0 +1,26 @@
From e2e9f6d9f9bd7449ff113c157b639ce1a24b9d3f Mon Sep 17 00:00:00 2001
From: David Bauer <mail@david-bauer.net>
Date: Sat, 24 Apr 2021 16:14:48 +0200
Subject: [PATCH 2/2] spi: ath79: set number of chipselect lines
All chipsets from AR7100 up to QCA9563 have three dedicated chipselect
lines for the integrated SPI controller. Remove the number of
chipselects from the platform data, as there is no need to manually set
this to a different value.
Signed-off-by: David Bauer <mail@david-bauer.net>
---
drivers/spi/spi-ath79.c | 2 +-
include/linux/platform_data/spi-ath79.h | 1 -
2 files changed, 1 insertion(+), 2 deletions(-)
--- a/drivers/spi/spi-ath79.c
+++ b/drivers/spi/spi-ath79.c
@@ -187,6 +187,7 @@ static int ath79_spi_probe(struct platfo
master->use_gpio_descriptors = true;
master->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 32);
master->flags = SPI_MASTER_GPIO_SS;
+ master->num_chipselect = 3;
sp->bitbang.master = master;
sp->bitbang.chipselect = ath79_spi_chipselect;