From 42954857190b9df16d9d873ecc7f6cc38e013e44 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= Date: Tue, 9 Jul 2019 20:32:28 +0200 Subject: brcm2708: add linux 4.19 support MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Boot tested on Raspberry Pi B+ (BCM2708) and Raspberry Pi 2 (BCM2709) Signed-off-by: Álvaro Fernández Rojas --- ...12-spi-bcm2835-Disable-forced-software-CS.patch | 34 ++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 target/linux/brcm2708/patches-4.19/950-0012-spi-bcm2835-Disable-forced-software-CS.patch (limited to 'target/linux/brcm2708/patches-4.19/950-0012-spi-bcm2835-Disable-forced-software-CS.patch') diff --git a/target/linux/brcm2708/patches-4.19/950-0012-spi-bcm2835-Disable-forced-software-CS.patch b/target/linux/brcm2708/patches-4.19/950-0012-spi-bcm2835-Disable-forced-software-CS.patch new file mode 100644 index 0000000000..091ede137d --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0012-spi-bcm2835-Disable-forced-software-CS.patch @@ -0,0 +1,34 @@ +From 8d654c03c8e0730e67fc4e7d6435da05ddf4e284 Mon Sep 17 00:00:00 2001 +From: Phil Elwell +Date: Fri, 1 Jul 2016 22:09:24 +0100 +Subject: [PATCH 012/703] spi-bcm2835: Disable forced software CS + +Select software CS in bcm2708_common.dtsi, and disable the automatic +conversion in the driver to allow hardware CS to be re-enabled with an +overlay. + +See: https://github.com/raspberrypi/linux/issues/1547 + +Signed-off-by: Phil Elwell +--- + drivers/spi/spi-bcm2835.c | 2 ++ + 1 file changed, 2 insertions(+) + +--- a/drivers/spi/spi-bcm2835.c ++++ b/drivers/spi/spi-bcm2835.c +@@ -705,6 +705,7 @@ static int bcm2835_spi_setup(struct spi_ + return -EINVAL; + } + ++#if 0 + /* now translate native cs to GPIO */ + /* first look for chip select pins in the devices pin groups */ + for (pingroup_index = 0; +@@ -754,6 +755,7 @@ static int bcm2835_spi_setup(struct spi_ + spi->chip_select, spi->cs_gpio, err); + return err; + } ++#endif + + return 0; + } -- cgit v1.2.3