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| author | Matti Laakso <matti.laakso@outlook.com> | 2018-03-18 17:23:08 +0200 |
|---|---|---|
| committer | Hauke Mehrtens <hauke@hauke-m.de> | 2018-03-31 16:13:19 +0200 |
| commit | cae808946ae5f698d8c9e2c58b9b75e69c343c38 (patch) | |
| tree | d5c642fcbc6705b4d53a0402f08ca6ff1038ce52 /target/linux/pistachio/patches-4.14/104-spi-img-spfi-use-device-0-configuration-for-all-devi.patch | |
| parent | 2534141322b0541daa627a516280638c12a262fe (diff) | |
| download | upstream-cae808946ae5f698d8c9e2c58b9b75e69c343c38.tar.gz upstream-cae808946ae5f698d8c9e2c58b9b75e69c343c38.tar.bz2 upstream-cae808946ae5f698d8c9e2c58b9b75e69c343c38.zip | |
pistachio: add kernel 4.14 support
Add patches and config for 4.14, refreshed from 4.9.
Signed-off-by: Matti Laakso <matti.laakso@outlook.com>
Diffstat (limited to 'target/linux/pistachio/patches-4.14/104-spi-img-spfi-use-device-0-configuration-for-all-devi.patch')
| -rw-r--r-- | target/linux/pistachio/patches-4.14/104-spi-img-spfi-use-device-0-configuration-for-all-devi.patch | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/target/linux/pistachio/patches-4.14/104-spi-img-spfi-use-device-0-configuration-for-all-devi.patch b/target/linux/pistachio/patches-4.14/104-spi-img-spfi-use-device-0-configuration-for-all-devi.patch new file mode 100644 index 0000000000..6c9e6b5a76 --- /dev/null +++ b/target/linux/pistachio/patches-4.14/104-spi-img-spfi-use-device-0-configuration-for-all-devi.patch @@ -0,0 +1,64 @@ +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) && + /* |