diff options
Diffstat (limited to 'target/linux/pistachio/patches-4.9/104-spi-img-spfi-use-device-0-configuration-for-all-devi.patch')
| -rw-r--r-- | target/linux/pistachio/patches-4.9/104-spi-img-spfi-use-device-0-configuration-for-all-devi.patch | 64 |
1 files changed, 0 insertions, 64 deletions
diff --git a/target/linux/pistachio/patches-4.9/104-spi-img-spfi-use-device-0-configuration-for-all-devi.patch b/target/linux/pistachio/patches-4.9/104-spi-img-spfi-use-device-0-configuration-for-all-devi.patch deleted file mode 100644 index 6c9e6b5a76..0000000000 --- a/target/linux/pistachio/patches-4.9/104-spi-img-spfi-use-device-0-configuration-for-all-devi.patch +++ /dev/null @@ -1,64 +0,0 @@ -From 905ee06a9966113fe51d6bad1819759cb30fd0bd Mon Sep 17 00:00:00 2001 -From: Ionela Voinescu <ionela.voinescu@imgtec.com> -Date: Tue, 9 Feb 2016 10:18:31 +0000 -Subject: spi: img-spfi: use device 0 configuration for all devices - -Given that we control the chip select line externally -we can use only one parameter register (device 0 parameter -register) and one set of configuration bits (port configuration -bits for device 0) for all devices (all chip select lines). - -Signed-off-by: Ionela Voinescu <ionela.voinescu@imgtec.com> ---- - drivers/spi/spi-img-spfi.c | 23 ++++++++++++++++------- - 1 file changed, 16 insertions(+), 7 deletions(-) - ---- a/drivers/spi/spi-img-spfi.c -+++ b/drivers/spi/spi-img-spfi.c -@@ -437,18 +437,23 @@ static int img_spfi_prepare(struct spi_m - struct img_spfi *spfi = spi_master_get_devdata(master); - u32 val; - -+ /* -+ * The chip select line is controlled externally so -+ * we can use the CS0 configuration for all devices -+ */ - val = spfi_readl(spfi, SPFI_PORT_STATE); -+ -+ /* 0 for device selection */ - 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); -+ val |= SPFI_PORT_STATE_CK_PHASE(0); - else -- val &= ~SPFI_PORT_STATE_CK_PHASE(msg->spi->chip_select); -+ val &= ~SPFI_PORT_STATE_CK_PHASE(0); - if (msg->spi->mode & SPI_CPOL) -- val |= SPFI_PORT_STATE_CK_POL(msg->spi->chip_select); -+ val |= SPFI_PORT_STATE_CK_POL(0); - else -- val &= ~SPFI_PORT_STATE_CK_POL(msg->spi->chip_select); -+ val &= ~SPFI_PORT_STATE_CK_POL(0); - spfi_writel(spfi, val, SPFI_PORT_STATE); - - return 0; -@@ -548,11 +553,15 @@ static void img_spfi_config(struct spi_m - div = DIV_ROUND_UP(clk_get_rate(spfi->spfi_clk), xfer->speed_hz); - div = clamp(512 / (1 << get_count_order(div)), 1, 128); - -- val = spfi_readl(spfi, SPFI_DEVICE_PARAMETER(spi->chip_select)); -+ /* -+ * The chip select line is controlled externally so -+ * we can use the CS0 parameters for all devices -+ */ -+ val = spfi_readl(spfi, SPFI_DEVICE_PARAMETER(0)); - val &= ~(SPFI_DEVICE_PARAMETER_BITCLK_MASK << - SPFI_DEVICE_PARAMETER_BITCLK_SHIFT); - val |= div << SPFI_DEVICE_PARAMETER_BITCLK_SHIFT; -- spfi_writel(spfi, val, SPFI_DEVICE_PARAMETER(spi->chip_select)); -+ spfi_writel(spfi, val, SPFI_DEVICE_PARAMETER(0)); - - if (!list_is_last(&xfer->transfer_list, &master->cur_msg->transfers) && - /* |