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-rw-r--r--target/linux/ath79/patches-5.10/0051-spi-ath79-always-call-chipselect-function.patch21
1 files changed, 21 insertions, 0 deletions
diff --git a/target/linux/ath79/patches-5.10/0051-spi-ath79-always-call-chipselect-function.patch b/target/linux/ath79/patches-5.10/0051-spi-ath79-always-call-chipselect-function.patch
new file mode 100644
index 0000000000..746f9035a6
--- /dev/null
+++ b/target/linux/ath79/patches-5.10/0051-spi-ath79-always-call-chipselect-function.patch
@@ -0,0 +1,21 @@
+From: David Bauer <mail@david-bauer.net>
+Date: Wed, 17 Feb 2021 02:44:55 +0100
+Subject: [PATCH] spi: ath79: always call chipselect function
+
+api-bitbang has to call the chipselect function on the ath79 SPI driver
+in order to communicate with the SPI slave device.
+
+Fixes commit 4a07b8bcd503 ("spi: bitbang: Make chipselect callback optional")
+
+Signed-off-by: David Bauer <mail@david-bauer.net>
+
+--- a/drivers/spi/spi-ath79.c
++++ b/drivers/spi/spi-ath79.c
+@@ -152,6 +152,7 @@ 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;
+
+ sp->bitbang.master = master;
+ sp->bitbang.chipselect = ath79_spi_chipselect;