From cf4af8670b7377a9e9dbb4c5d3622538185ca362 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Fri, 19 Apr 2013 14:56:46 +0200 Subject: 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 --- arch/arm/boot/dts/ste-u300.dts | 12 ++++++++++++ arch/arm/mach-u300/core.c | 19 +++++++++++++++++++ 2 files changed, 31 insertions(+) (limited to 'arch/arm') diff --git a/arch/arm/boot/dts/ste-u300.dts b/arch/arm/boot/dts/ste-u300.dts index 4dc9f26c8b48..355ac60369c2 100644 --- a/arch/arm/boot/dts/ste-u300.dts +++ b/arch/arm/boot/dts/ste-u300.dts @@ -222,5 +222,17 @@ dmas = <&dmac 14>; dma-names = "rx"; }; + + spi: ssp@c0006000 { + compatible = "arm,pl022", "arm,primecell"; + reg = <0xc0006000 0x1000>; + interrupt-parent = <&vica>; + interrupts = <23>; + dmas = <&dmac 27 &dmac 28>; + dma-names = "tx", "rx"; + num-cs = <3>; + #address-cells = <1>; + #size-cells = <0>; + }; }; }; diff --git a/arch/arm/mach-u300/core.c b/arch/arm/mach-u300/core.c index 7866f54a4eaa..d102cb501f8d 100644 --- a/arch/arm/mach-u300/core.c +++ b/arch/arm/mach-u300/core.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include #include @@ -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, -- cgit v1.2.1