diff options
Diffstat (limited to 'target/linux/pistachio/patches-4.9/103-spi-img-spfi-set-device-select-bits-for-SPFI-port-st.patch')
| -rw-r--r-- | target/linux/pistachio/patches-4.9/103-spi-img-spfi-set-device-select-bits-for-SPFI-port-st.patch | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/target/linux/pistachio/patches-4.9/103-spi-img-spfi-set-device-select-bits-for-SPFI-port-st.patch b/target/linux/pistachio/patches-4.9/103-spi-img-spfi-set-device-select-bits-for-SPFI-port-st.patch new file mode 100644 index 0000000000..d5bf309b4e --- /dev/null +++ b/target/linux/pistachio/patches-4.9/103-spi-img-spfi-set-device-select-bits-for-SPFI-port-st.patch @@ -0,0 +1,32 @@ +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(+) + +diff --git a/drivers/spi/spi-img-spfi.c b/drivers/spi/spi-img-spfi.c +index c845a50..0d73d31 100644 +--- 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_master *master, struct spi_message *msg) + 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 +-- +2.7.4 + |