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authorLinus Walleij <linus.walleij@linaro.org>2013-04-19 14:56:46 +0200
committerLinus Walleij <linus.walleij@linaro.org>2013-06-17 13:54:28 +0200
commitcf4af8670b7377a9e9dbb4c5d3622538185ca362 (patch)
treefdf025d16a70c3a5ac1eb034b4dd2763a8bca192 /arch/arm/mach-u300
parent39738cc96b66cdb175ac86aa39823963d9f2bb84 (diff)
downloadop-kernel-dev-cf4af8670b7377a9e9dbb4c5d3622538185ca362.zip
op-kernel-dev-cf4af8670b7377a9e9dbb4c5d3622538185ca362.tar.gz
ARM: u300: add SPI PL022 to the device tree
This registers the PL022 PrimeCell from the U300 device tree. We make a new copy of the platform data for the device tree boot path, as the old platform data is in an older file which will be going away. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'arch/arm/mach-u300')
-rw-r--r--arch/arm/mach-u300/core.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/arm/mach-u300/core.c b/arch/arm/mach-u300/core.c
index 7866f54..d102cb5 100644
--- a/arch/arm/mach-u300/core.c
+++ b/arch/arm/mach-u300/core.c
@@ -19,6 +19,7 @@
#include <linux/dmaengine.h>
#include <linux/amba/bus.h>
#include <linux/amba/mmci.h>
+#include <linux/amba/pl022.h>
#include <linux/amba/serial.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
@@ -704,6 +705,22 @@ MACHINE_END
#ifdef CONFIG_OF
+static struct pl022_ssp_controller spi_plat_data = {
+ /* If you have several SPI buses this varies, we have only bus 0 */
+ .bus_id = 0,
+ /*
+ * On the APP CPU GPIO 4, 5 and 6 are connected as generic
+ * chip selects for SPI. (Same on U330, U335 and U365.)
+ * TODO: make sure the GPIO driver can select these properly
+ * and do padmuxing accordingly too.
+ */
+ .num_chipselect = 3,
+ .enable_dma = 1,
+ .dma_filter = coh901318_filter_id,
+ .dma_rx_param = (void *) U300_DMA_SPI_RX,
+ .dma_tx_param = (void *) U300_DMA_SPI_TX,
+};
+
/* These are mostly to get the right device names for the clock lookups */
static struct of_dev_auxdata u300_auxdata_lookup[] __initdata = {
OF_DEV_AUXDATA("stericsson,pinctrl-u300", U300_SYSCON_BASE,
@@ -720,6 +737,8 @@ static struct of_dev_auxdata u300_auxdata_lookup[] __initdata = {
"uart0", &uart0_plat_data),
OF_DEV_AUXDATA("arm,primecell", U300_UART1_BASE,
"uart1", &uart1_plat_data),
+ OF_DEV_AUXDATA("arm,primecell", U300_SPI_BASE,
+ "pl022", &spi_plat_data),
OF_DEV_AUXDATA("st,ddci2c", U300_I2C0_BASE,
"stu300.0", NULL),
OF_DEV_AUXDATA("st,ddci2c", U300_I2C1_BASE,
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