pistachio: add kernel 4.14 support

[openwrt/openwrt.git] / target / linux / pistachio / patches-4.14 / 103-spi-img-spfi-set-device-select-bits-for-SPFI-port-st.patch

diff --git a/target/linux/pistachio/patches-4.14/103-spi-img-spfi-set-device-select-bits-for-SPFI-port-st.patch b/target/linux/pistachio/patches-4.14/103-spi-img-spfi-set-device-select-bits-for-SPFI-port-st.patch
new file mode 100644 (file)
index 0000000..ba70348
--- /dev/null
+++ b/target/linux/pistachio/patches-4.14/103-spi-img-spfi-set-device-select-bits-for-SPFI-port-st.patch
@@ -0,0 +1,27 @@
+From 145f5369510b86cd55c659388a26a0cc267f8874 Mon Sep 17 00:00:00 2001
+From: Ionela Voinescu <ionela.voinescu@imgtec.com>
+Date: Mon, 1 Feb 2016 10:58:08 +0000
+Subject: spi: img-spfi: set device select bits for SPFI port state
+
+Even if the chip select line is not controlled by the SPFI
+hardware, the device select bits need to be set to specify
+the chip select line in use for the hardware to know what
+parameters to use for the current transfer.
+
+Signed-off-by: Ionela Voinescu <ionela.voinescu@imgtec.com>
+---
+ drivers/spi/spi-img-spfi.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/drivers/spi/spi-img-spfi.c
++++ b/drivers/spi/spi-img-spfi.c
+@@ -438,6 +438,9 @@ static int img_spfi_prepare(struct spi_m
+       u32 val;
+ 
+       val = spfi_readl(spfi, SPFI_PORT_STATE);
++      val &= ~(SPFI_PORT_STATE_DEV_SEL_MASK <<
++               SPFI_PORT_STATE_DEV_SEL_SHIFT);
++      val |= msg->spi->chip_select << SPFI_PORT_STATE_DEV_SEL_SHIFT;
+       if (msg->spi->mode & SPI_CPHA)
+               val |= SPFI_PORT_STATE_CK_PHASE(msg->spi->chip_select);
+       else