diff options
| -rw-r--r-- | Documentation/devicetree/bindings/arm/ste-nomadik.txt | 19 | ||||
| -rw-r--r-- | arch/arm/boot/dts/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/boot/dts/ste-nomadik-s8815.dts | 20 | ||||
| -rw-r--r-- | arch/arm/boot/dts/ste-nomadik-stn8815.dtsi | 80 | ||||
| -rw-r--r-- | arch/arm/mach-nomadik/board-nhk8815.c | 4 | ||||
| -rw-r--r-- | arch/arm/mach-nomadik/cpu-8815.c | 78 | ||||
| -rw-r--r-- | arch/arm/mach-nomadik/cpu-8815.h | 1 | ||||
| -rw-r--r-- | arch/arm/mach-nomadik/i2c-8815nhk.c | 5 |
8 files changed, 207 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/arm/ste-nomadik.txt b/Documentation/devicetree/bindings/arm/ste-nomadik.txt new file mode 100644 index 000000000000..23f32bddebf9 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/ste-nomadik.txt @@ -0,0 +1,19 @@ +ST-Ericsson Nomadik Device Tree Bindings + +For various board the "board" node may contain specific properties +that pertain to this particular board, such as board-specific GPIOs. + +Boards with the Nomadik SoC include: + +S8815 "MiniKit" manufactured by Calao Systems: + +Required root node property: + +compatible="calaosystems,usb-s8815"; + +Required node: usb-s8815 + +Example: + +usb-s8815 { +}; diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile index e44da40d984f..7bc5ba738041 100644 --- a/arch/arm/boot/dts/Makefile +++ b/arch/arm/boot/dts/Makefile @@ -100,6 +100,7 @@ dtb-$(CONFIG_ARCH_MXS) += imx23-evk.dtb \ imx28-m28evk.dtb \ imx28-sps1.dtb \ imx28-tx28.dtb +dtb-$(CONFIG_ARCH_NOMADIK) += ste-nomadik-s8815.dtb dtb-$(CONFIG_ARCH_OMAP2PLUS) += omap2420-h4.dtb \ omap3-beagle.dtb \ omap3-beagle-xm.dtb \ diff --git a/arch/arm/boot/dts/ste-nomadik-s8815.dts b/arch/arm/boot/dts/ste-nomadik-s8815.dts new file mode 100644 index 000000000000..97b7d1df5aaa --- /dev/null +++ b/arch/arm/boot/dts/ste-nomadik-s8815.dts @@ -0,0 +1,20 @@ +/* + * Device Tree for the ST-Ericsson Nomadik S8815 board + * Produced by Calao Systems + */ + +/dts-v1/; +/include/ "ste-nomadik-stn8815.dtsi" + +/ { + model = "Calao Systems USB-S8815"; + compatible = "calaosystems,usb-s8815"; + + chosen { + bootargs = "root=/dev/ram0 console=ttyAMA1,115200n8 earlyprintk"; + }; + + /* Custom board node with GPIO pins to active etc */ + usb-s8815 { + }; +}; diff --git a/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi b/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi new file mode 100644 index 000000000000..0a5b670430de --- /dev/null +++ b/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi @@ -0,0 +1,80 @@ +/* + * Device Tree for the ST-Ericsson Nomadik 8815 STn8815 SoC + */ +/include/ "skeleton.dtsi" + +/ { + #address-cells = <1>; + #size-cells = <1>; + + memory { + reg = <0x00000000 0x04000000>, + <0x08000000 0x04000000>; + }; + + L2: l2-cache { + compatible = "arm,l210-cache"; + reg = <0x10210000 0x1000>; + interrupt-parent = <&vica>; + interrupts = <30>; + cache-unified; + cache-level = <2>; + }; + + mtu0 { + /* Nomadik system timer */ + reg = <0x101e2000 0x1000>; + interrupt-parent = <&vica>; + interrupts = <4>; + }; + + mtu1 { + /* Secondary timer */ + reg = <0x101e3000 0x1000>; + interrupt-parent = <&vica>; + interrupts = <5>; + }; + + amba { + compatible = "arm,amba-bus"; + #address-cells = <1>; + #size-cells = <1>; + ranges; + + vica: intc@0x10140000 { + compatible = "arm,versatile-vic"; + interrupt-controller; + #interrupt-cells = <1>; + reg = <0x10140000 0x20>; + }; + + vicb: intc@0x10140020 { + compatible = "arm,versatile-vic"; + interrupt-controller; + #interrupt-cells = <1>; + reg = <0x10140020 0x20>; + }; + + uart0: uart@101fd000 { + compatible = "arm,pl011", "arm,primecell"; + reg = <0x101fd000 0x1000>; + interrupt-parent = <&vica>; + interrupts = <12>; + }; + + uart1: uart@101fb000 { + compatible = "arm,pl011", "arm,primecell"; + reg = <0x101fb000 0x1000>; + interrupt-parent = <&vica>; + interrupts = <17>; + }; + + uart2: uart@101f2000 { + compatible = "arm,pl011", "arm,primecell"; + reg = <0x101f2000 0x1000>; + interrupt-parent = <&vica>; + interrupts = <28>; + status = "disabled"; + }; + }; +}; diff --git a/arch/arm/mach-nomadik/board-nhk8815.c b/arch/arm/mach-nomadik/board-nhk8815.c index 72ec3fad2ba6..d152d7bdf411 100644 --- a/arch/arm/mach-nomadik/board-nhk8815.c +++ b/arch/arm/mach-nomadik/board-nhk8815.c @@ -204,6 +204,10 @@ static int __init nhk8815_mmcsd_init(void) { int ret; + /* For e.g. devicetree boot */ + if (!machine_is_nomadik()) + return 0; + ret = gpio_request(112, "card detect bias"); if (ret) return ret; diff --git a/arch/arm/mach-nomadik/cpu-8815.c b/arch/arm/mach-nomadik/cpu-8815.c index 351404673f6c..7c8e3487f4eb 100644 --- a/arch/arm/mach-nomadik/cpu-8815.c +++ b/arch/arm/mach-nomadik/cpu-8815.c @@ -25,13 +25,19 @@ #include <linux/slab.h> #include <linux/irq.h> #include <linux/dma-mapping.h> -#include <linux/irqchip/arm-vic.h> +#include <linux/irqchip.h> #include <linux/platform_data/clk-nomadik.h> #include <linux/platform_data/pinctrl-nomadik.h> +#include <linux/platform_data/clocksource-nomadik-mtu.h> +#include <linux/of_irq.h> +#include <linux/of_address.h> +#include <linux/of_platform.h> #include <mach/hardware.h> #include <mach/irqs.h> +#include <asm/mach/arch.h> #include <asm/mach/map.h> +#include <asm/mach/time.h> #include <asm/cacheflush.h> #include <asm/hardware/cache-l2x0.h> @@ -160,3 +166,73 @@ void cpu8815_restart(char mode, const char *cmd) /* Write anything to Reset status register */ writel(1, src_rstsr); } + +#ifdef CONFIG_OF + +/* Initial value for SRC control register: all timers use MXTAL/8 source */ +#define SRC_CR_INIT_MASK 0x00007fff +#define SRC_CR_INIT_VAL 0x2aaa8000 + +static void __init cpu8815_timer_init_of(void) +{ + struct device_node *mtu; + void __iomem *base; + int irq; + u32 src_cr; + + /* We need this to be up now */ + nomadik_clk_init(); + + mtu = of_find_node_by_path("/mtu0"); + if (!mtu) + return; + base = of_iomap(mtu, 0); + if (WARN_ON(!base)) + return; + irq = irq_of_parse_and_map(mtu, 0); + + pr_info("Remapped MTU @ %p, irq: %d\n", base, irq); + + /* Configure timer sources in "system reset controller" ctrl reg */ + src_cr = readl(base); + src_cr &= SRC_CR_INIT_MASK; + src_cr |= SRC_CR_INIT_VAL; + writel(src_cr, base); + + nmdk_timer_init(base, irq); +} + +/* These are mostly to get the right device names for the clock lookups */ +static struct of_dev_auxdata cpu8815_auxdata_lookup[] __initdata = { + OF_DEV_AUXDATA("arm,primecell", NOMADIK_UART0_BASE, + "uart0", NULL), + OF_DEV_AUXDATA("arm,primecell", NOMADIK_UART1_BASE, + "uart1", NULL), + { /* sentinel */ }, +}; + +static void __init cpu8815_init_of(void) +{ +#ifdef CONFIG_CACHE_L2X0 + /* At full speed latency must be >=2, so 0x249 in low bits */ + l2x0_of_init(0x00730249, 0xfe000fff); +#endif + of_platform_populate(NULL, of_default_bus_match_table, + cpu8815_auxdata_lookup, NULL); +} + +static const char * cpu8815_board_compat[] = { + "calaosystems,usb-s8815", + NULL, +}; + +DT_MACHINE_START(NOMADIK_DT, "Nomadik STn8815") + .map_io = cpu8815_map_io, + .init_irq = irqchip_init, + .init_time = cpu8815_timer_init_of, + .init_machine = cpu8815_init_of, + .restart = cpu8815_restart, + .dt_compat = cpu8815_board_compat, +MACHINE_END + +#endif diff --git a/arch/arm/mach-nomadik/cpu-8815.h b/arch/arm/mach-nomadik/cpu-8815.h index 71c21e8a11dc..d6c7830e4799 100644 --- a/arch/arm/mach-nomadik/cpu-8815.h +++ b/arch/arm/mach-nomadik/cpu-8815.h @@ -2,3 +2,4 @@ extern void cpu8815_map_io(void); extern void cpu8815_platform_init(void); extern void cpu8815_init_irq(void); extern void cpu8815_restart(char, const char *); +extern struct sys_timer cpu8815_timer; diff --git a/arch/arm/mach-nomadik/i2c-8815nhk.c b/arch/arm/mach-nomadik/i2c-8815nhk.c index f0e9e64f731a..299ff5a687bc 100644 --- a/arch/arm/mach-nomadik/i2c-8815nhk.c +++ b/arch/arm/mach-nomadik/i2c-8815nhk.c @@ -4,6 +4,7 @@ #include <linux/i2c-algo-bit.h> #include <linux/i2c-gpio.h> #include <linux/platform_device.h> +#include <asm/mach-types.h> /* * There are two busses in the 8815NHK. @@ -58,6 +59,10 @@ static struct platform_device nhk8815_i2c_dev2 = { static int __init nhk8815_i2c_init(void) { + /* For e.g. devicetree boot */ + if (!machine_is_nomadik()) + return 0; + platform_device_register(&nhk8815_i2c_dev0); platform_device_register(&nhk8815_i2c_dev1); platform_device_register(&nhk8815_i2c_dev2); |