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ARM: at91: dt: at91sam9g45 family and board device tree files
Create a new device tree source file for Atmel at91sam9g45 SoC family. The Evaluation Kit at91sam9m10g45ek includes it. This first basic support will be populated as drivers and boards will be converted to device tree. Contains serial, dma and interrupt controllers. The generic board file still takes advantage of platform data for early serial init. As we need a storage media and the NAND flash driver is not converted to DT yet, we keep old initialization for it. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Reviewed-by: Rob Herring <rob.herring@calxeda.com>
This commit is contained in:
Nicolas Ferre
parent
c3b92c8787
commit
49fe2ba313
106
arch/arm/boot/dts/at91sam9g45.dtsi
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106
arch/arm/boot/dts/at91sam9g45.dtsi
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@ -0,0 +1,106 @@
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/*
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* at91sam9g45.dtsi - Device Tree Include file for AT91SAM9G45 family SoC
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* applies to AT91SAM9G45, AT91SAM9M10,
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* AT91SAM9G46, AT91SAM9M11 SoC
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*
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* Copyright (C) 2011 Atmel,
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* 2011 Nicolas Ferre <nicolas.ferre@atmel.com>
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*
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* Licensed under GPLv2 or later.
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*/
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/include/ "skeleton.dtsi"
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/ {
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model = "Atmel AT91SAM9G45 family SoC";
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compatible = "atmel,at91sam9g45";
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interrupt-parent = <&aic>;
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aliases {
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serial0 = &dbgu;
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serial1 = &usart0;
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serial2 = &usart1;
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serial3 = &usart2;
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serial4 = &usart3;
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};
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cpus {
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cpu@0 {
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compatible = "arm,arm926ejs";
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};
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};
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memory@70000000 {
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reg = <0x70000000 0x10000000>;
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};
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ahb {
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compatible = "simple-bus";
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#address-cells = <1>;
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#size-cells = <1>;
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ranges;
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apb {
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compatible = "simple-bus";
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#address-cells = <1>;
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#size-cells = <1>;
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ranges;
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aic: interrupt-controller@fffff000 {
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#interrupt-cells = <1>;
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compatible = "atmel,at91rm9200-aic";
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interrupt-controller;
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interrupt-parent;
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reg = <0xfffff000 0x200>;
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};
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dma: dma-controller@ffffec00 {
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compatible = "atmel,at91sam9g45-dma";
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reg = <0xffffec00 0x200>;
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interrupts = <21>;
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};
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dbgu: serial@ffffee00 {
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compatible = "atmel,at91sam9260-usart";
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reg = <0xffffee00 0x200>;
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interrupts = <1>;
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status = "disabled";
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};
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usart0: serial@fff8c000 {
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compatible = "atmel,at91sam9260-usart";
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reg = <0xfff8c000 0x200>;
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interrupts = <7>;
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atmel,use-dma-rx;
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atmel,use-dma-tx;
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status = "disabled";
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};
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usart1: serial@fff90000 {
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compatible = "atmel,at91sam9260-usart";
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reg = <0xfff90000 0x200>;
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interrupts = <8>;
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atmel,use-dma-rx;
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atmel,use-dma-tx;
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status = "disabled";
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};
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usart2: serial@fff94000 {
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compatible = "atmel,at91sam9260-usart";
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reg = <0xfff94000 0x200>;
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interrupts = <9>;
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atmel,use-dma-rx;
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atmel,use-dma-tx;
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status = "disabled";
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};
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usart3: serial@fff98000 {
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compatible = "atmel,at91sam9260-usart";
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reg = <0xfff98000 0x200>;
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interrupts = <10>;
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atmel,use-dma-rx;
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atmel,use-dma-tx;
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status = "disabled";
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};
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};
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};
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};
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35
arch/arm/boot/dts/at91sam9m10g45ek.dts
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35
arch/arm/boot/dts/at91sam9m10g45ek.dts
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@ -0,0 +1,35 @@
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/*
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* at91sam9m10g45ek.dts - Device Tree file for AT91SAM9M10G45-EK board
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*
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* Copyright (C) 2011 Atmel,
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* 2011 Nicolas Ferre <nicolas.ferre@atmel.com>
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*
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* Licensed under GPLv2 or later.
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*/
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/dts-v1/;
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/include/ "at91sam9g45.dtsi"
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/ {
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model = "Atmel AT91SAM9M10G45-EK";
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compatible = "atmel,at91sam9m10g45ek", "atmel,at91sam9g45", "atmel,at91sam9";
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chosen {
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bootargs = "mem=64M console=ttyS0,115200 mtdparts=atmel_nand:4M(bootstrap/uboot/kernel)ro,60M(rootfs),-(data) root=/dev/mtdblock1 rw rootfstype=jffs2";
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};
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memory@70000000 {
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reg = <0x70000000 0x4000000>;
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};
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ahb {
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apb {
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dbgu: serial@ffffee00 {
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status = "okay";
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};
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usart1: serial@fff90000 {
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status = "okay";
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};
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};
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};
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};
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@ -442,6 +442,17 @@ endif
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# ----------------------------------------------------------
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comment "Generic Board Type"
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config MACH_AT91SAM_DT
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bool "Atmel AT91SAM Evaluation Kits with device-tree support"
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select USE_OF
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help
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Select this if you want to experiment device-tree with
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an Atmel Evaluation Kit.
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# ----------------------------------------------------------
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comment "AT91 Board Options"
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config MTD_AT91_DATAFLASH_CARD
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@ -74,6 +74,9 @@ obj-$(CONFIG_MACH_SNAPPER_9260) += board-snapper9260.o
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# AT91SAM9G45 board-specific support
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obj-$(CONFIG_MACH_AT91SAM9M10G45EK) += board-sam9m10g45ek.o
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# AT91SAM board with device-tree
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obj-$(CONFIG_MACH_AT91SAM_DT) += board-dt.o
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# AT91CAP9 board-specific support
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obj-$(CONFIG_MACH_AT91CAP9ADK) += board-cap9adk.o
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@ -16,3 +16,5 @@ else
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params_phys-y := 0x20000100
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initrd_phys-y := 0x20410000
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endif
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dtb-$(CONFIG_MACH_AT91SAM_DT) += at91sam9m10g45ek.dtb
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@ -215,6 +215,12 @@ static struct clk_lookup periph_clocks_lookups[] = {
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CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.1", &tcb0_clk),
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CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc0_clk),
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CLKDEV_CON_DEV_ID("pclk", "ssc.1", &ssc1_clk),
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/* more usart lookup table for DT entries */
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CLKDEV_CON_DEV_ID("usart", "ffffee00.serial", &mck),
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CLKDEV_CON_DEV_ID("usart", "fff8c000.serial", &usart0_clk),
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CLKDEV_CON_DEV_ID("usart", "fff90000.serial", &usart1_clk),
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CLKDEV_CON_DEV_ID("usart", "fff94000.serial", &usart2_clk),
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CLKDEV_CON_DEV_ID("usart", "fff98000.serial", &usart3_clk),
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};
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static struct clk_lookup usart_clocks_lookups[] = {
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122
arch/arm/mach-at91/board-dt.c
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122
arch/arm/mach-at91/board-dt.c
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@ -0,0 +1,122 @@
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/*
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* Setup code for AT91SAM Evaluation Kits with Device Tree support
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*
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* Covers: * AT91SAM9G45-EKES board
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* * AT91SAM9M10-EKES board
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* * AT91SAM9M10G45-EK board
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*
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* Copyright (C) 2011 Atmel,
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* 2011 Nicolas Ferre <nicolas.ferre@atmel.com>
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*
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* Licensed under GPLv2 or later.
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*/
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#include <linux/types.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/gpio.h>
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#include <linux/irqdomain.h>
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#include <linux/of_irq.h>
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#include <linux/of_platform.h>
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#include <mach/hardware.h>
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#include <mach/board.h>
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#include <mach/system_rev.h>
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#include <mach/at91sam9_smc.h>
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#include <asm/setup.h>
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#include <asm/irq.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <asm/mach/irq.h>
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#include "sam9_smc.h"
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#include "generic.h"
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static void __init ek_init_early(void)
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{
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/* Initialize processor: 12.000 MHz crystal */
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at91_initialize(12000000);
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/* DGBU on ttyS0. (Rx & Tx only) */
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at91_register_uart(0, 0, 0);
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/* set serial console to ttyS0 (ie, DBGU) */
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at91_set_serial_console(0);
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}
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/* det_pin is not connected */
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static struct atmel_nand_data __initdata ek_nand_data = {
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.ale = 21,
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.cle = 22,
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.rdy_pin = AT91_PIN_PC8,
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.enable_pin = AT91_PIN_PC14,
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};
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static struct sam9_smc_config __initdata ek_nand_smc_config = {
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.ncs_read_setup = 0,
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.nrd_setup = 2,
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.ncs_write_setup = 0,
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.nwe_setup = 2,
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.ncs_read_pulse = 4,
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.nrd_pulse = 4,
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.ncs_write_pulse = 4,
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.nwe_pulse = 4,
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.read_cycle = 7,
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.write_cycle = 7,
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.mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
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.tdf_cycles = 3,
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};
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static void __init ek_add_device_nand(void)
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{
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ek_nand_data.bus_width_16 = board_have_nand_16bit();
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/* setup bus-width (8 or 16) */
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if (ek_nand_data.bus_width_16)
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ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
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else
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ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
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/* configure chip-select 3 (NAND) */
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sam9_smc_configure(3, &ek_nand_smc_config);
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at91_add_device_nand(&ek_nand_data);
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}
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static const struct of_device_id aic_of_match[] __initconst = {
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{ .compatible = "atmel,at91rm9200-aic", },
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{},
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};
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static void __init at91_dt_init_irq(void)
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{
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irq_domain_generate_simple(aic_of_match, 0xfffff000, 0);
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at91_init_irq_default();
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}
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static void __init at91_dt_device_init(void)
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{
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of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
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/* NAND */
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ek_add_device_nand();
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}
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static const char *at91_dt_board_compat[] __initdata = {
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"atmel,at91sam9m10g45ek",
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NULL
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};
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DT_MACHINE_START(at91sam_dt, "Atmel AT91SAM (Device Tree)")
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/* Maintainer: Atmel */
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.timer = &at91sam926x_timer,
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.map_io = at91_map_io,
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.init_early = ek_init_early,
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.init_irq = at91_dt_init_irq,
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.init_machine = at91_dt_device_init,
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.dt_compat = at91_dt_board_compat,
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MACHINE_END
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