[PATCH 2/3 v4] arm: kirkwood: add dreamplug (fdt) support.
Jason Cooper
jason at lakedaemon.net
Wed Feb 22 14:18:45 EST 2012
Initially, copied guruplug-setup.c and did s/guruplug/dreamplug/g.
Then, switched to SPI based NOR flash.
After talking to Arnd Bergman, chose an incremental approach to adding
devicetree support. First, we use the dtb to tell us we are on the
dreamplug, then we gradually port over drivers.
Driver porting will start with the uart (see next patch), and progress
from there. Possibly, spi/flash/partitions will be next.
When done, board-dt.c will no longer be dreamplug specific, and dt's can
be made for the other kirkwood boards.
Signed-off-by: Jason Cooper <jason at lakedaemon.net>
---
Changes from v1
- attempting dts, looking for pointers.
Changes from v2
- resubmit as MACH_TYPE_DREAMPLUG (3550) is in arm/for-next, rebased
against same.
- removed lame fdt attempt, others are working on kirkwood fdt. Will
convert once kirkwood fdt is mainline.
- s/boot_params/atag_offset/
- added kirkwood_reset
- 1 checkpatch.pl warning (help in Kconfig), looks the same as all
other kirkwood boards...
Changes from v3
- rebased against v3.3-rc3 (recommended by Arnd)
- use devicetree to determine which board we are on
- added patch to configure uart0 from devicetree
arch/arm/boot/dts/kirkwood-dreamplug.dts | 19 +++
arch/arm/boot/dts/kirkwood.dtsi | 6 +
arch/arm/mach-kirkwood/Kconfig | 14 +++
arch/arm/mach-kirkwood/Makefile | 1 +
arch/arm/mach-kirkwood/Makefile.boot | 2 +
arch/arm/mach-kirkwood/board-dt.c | 182 ++++++++++++++++++++++++++++++
6 files changed, 224 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/boot/dts/kirkwood-dreamplug.dts
create mode 100644 arch/arm/boot/dts/kirkwood.dtsi
create mode 100644 arch/arm/mach-kirkwood/board-dt.c
diff --git a/arch/arm/boot/dts/kirkwood-dreamplug.dts b/arch/arm/boot/dts/kirkwood-dreamplug.dts
new file mode 100644
index 0000000..fbfaaf6
--- /dev/null
+++ b/arch/arm/boot/dts/kirkwood-dreamplug.dts
@@ -0,0 +1,19 @@
+/dts-v1/;
+
+/include/ "kirkwood.dtsi"
+
+/ {
+ model = "Marvell Dreamplug";
+ compatible = "marvell,dreamplug", "marvell,kirkwood";
+
+ memory {
+ device_type = "memory";
+ reg = <0x00000000 0x20000000>;
+ };
+
+ chosen {
+ bootargs = "console=ttyS0,115200n8 earlyprintk";
+ };
+
+
+};
diff --git a/arch/arm/boot/dts/kirkwood.dtsi b/arch/arm/boot/dts/kirkwood.dtsi
new file mode 100644
index 0000000..771c6bb
--- /dev/null
+++ b/arch/arm/boot/dts/kirkwood.dtsi
@@ -0,0 +1,6 @@
+/include/ "skeleton.dtsi"
+
+/ {
+ compatible = "marvell,kirkwood";
+};
+
diff --git a/arch/arm/mach-kirkwood/Kconfig b/arch/arm/mach-kirkwood/Kconfig
index 7fc603b..6095884 100644
--- a/arch/arm/mach-kirkwood/Kconfig
+++ b/arch/arm/mach-kirkwood/Kconfig
@@ -44,6 +44,20 @@ config MACH_GURUPLUG
Say 'Y' here if you want your kernel to support the
Marvell GuruPlug Reference Board.
+config ARCH_KIRKWOOD_DT
+ bool "Marvell Kirkwood Flattened Device Tree"
+ select USE_OF
+ help
+ Say 'Y' here if you want your kernel to support the
+ Marvell Kirkwood using flattened device tree.
+
+config MACH_DREAMPLUG_DT
+ bool "Marvell DreamPlug (Flattened Device Tree)"
+ depends on ARCH_KIRKWOOD_DT
+ help
+ Say 'Y' here if you want your kernel to support the
+ Marvell DreamPlug (Flattened Device Tree).
+
config MACH_TS219
bool "QNAP TS-110, TS-119, TS-119P+, TS-210, TS-219, TS-219P and TS-219P+ Turbo NAS"
help
diff --git a/arch/arm/mach-kirkwood/Makefile b/arch/arm/mach-kirkwood/Makefile
index 5dcaa81..acbc5e1 100644
--- a/arch/arm/mach-kirkwood/Makefile
+++ b/arch/arm/mach-kirkwood/Makefile
@@ -20,3 +20,4 @@ obj-$(CONFIG_MACH_NET5BIG_V2) += netxbig_v2-setup.o lacie_v2-common.o
obj-$(CONFIG_MACH_T5325) += t5325-setup.o
obj-$(CONFIG_CPU_IDLE) += cpuidle.o
+obj-$(CONFIG_ARCH_KIRKWOOD_DT) += board-dt.o
diff --git a/arch/arm/mach-kirkwood/Makefile.boot b/arch/arm/mach-kirkwood/Makefile.boot
index 760a0ef..16f9385 100644
--- a/arch/arm/mach-kirkwood/Makefile.boot
+++ b/arch/arm/mach-kirkwood/Makefile.boot
@@ -1,3 +1,5 @@
zreladdr-y += 0x00008000
params_phys-y := 0x00000100
initrd_phys-y := 0x00800000
+
+dtb-$(CONFIG_MACH_DREAMPLUG_DT) += kirkwood-dreamplug.dtb
diff --git a/arch/arm/mach-kirkwood/board-dt.c b/arch/arm/mach-kirkwood/board-dt.c
new file mode 100644
index 0000000..ab13eb9
--- /dev/null
+++ b/arch/arm/mach-kirkwood/board-dt.c
@@ -0,0 +1,182 @@
+/*
+ * Copyright 2012 (C), Jason Cooper <jason at lakedaemon.net>
+ *
+ * arch/arm/mach-kirkwood/board-dt.c
+ *
+ * Marvell DreamPlug Reference Board Setup
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/partitions.h>
+#include <linux/ata_platform.h>
+#include <linux/mv643xx_eth.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_fdt.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <linux/gpio.h>
+#include <linux/leds.h>
+#include <linux/mtd/physmap.h>
+#include <linux/spi/flash.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/orion_spi.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <mach/kirkwood.h>
+#include <plat/mvsdio.h>
+#include "common.h"
+#include "mpp.h"
+
+static struct of_device_id kirkwood_dt_match_table[] __initdata = {
+ { .compatible = "simple-bus", },
+ { }
+};
+
+struct mtd_partition dreamplug_partitions[] = {
+ {
+ .name = "u-boot",
+ .size = SZ_512K,
+ .offset = 0,
+ },
+ {
+ .name = "u-boot env",
+ .size = SZ_64K,
+ .offset = SZ_512K + SZ_512K,
+ },
+ {
+ .name = "dtb",
+ .size = SZ_64K,
+ .offset = SZ_512K + SZ_512K + SZ_512K,
+ },
+};
+
+static const struct flash_platform_data dreamplug_spi_slave_data = {
+ .type = "mx25l1606e",
+ .name = "spi_flash",
+ .parts = dreamplug_partitions,
+ .nr_parts = ARRAY_SIZE(dreamplug_partitions),
+};
+
+static struct spi_board_info __initdata dreamplug_spi_slave_info[] = {
+ {
+ .modalias = "m25p80",
+ .platform_data = &dreamplug_spi_slave_data,
+ .irq = -1,
+ .max_speed_hz = 50000000,
+ .bus_num = 0,
+ .chip_select = 0,
+ },
+};
+
+static struct mv643xx_eth_platform_data dreamplug_ge00_data = {
+ .phy_addr = MV643XX_ETH_PHY_ADDR(0),
+};
+
+static struct mv643xx_eth_platform_data dreamplug_ge01_data = {
+ .phy_addr = MV643XX_ETH_PHY_ADDR(1),
+};
+
+static struct mv_sata_platform_data dreamplug_sata_data = {
+ .n_ports = 1,
+};
+
+static struct mvsdio_platform_data dreamplug_mvsdio_data = {
+ /* unfortunately the CD signal has not been connected */
+};
+
+static struct gpio_led dreamplug_led_pins[] = {
+ {
+ .name = "dreamplug:blue:bluetooth",
+ .gpio = 47,
+ .active_low = 1,
+ },
+ {
+ .name = "dreamplug:green:wifi",
+ .gpio = 48,
+ .active_low = 1,
+ },
+ {
+ .name = "dreamplug:green:wifi_ap",
+ .gpio = 49,
+ .active_low = 1,
+ },
+};
+
+static struct gpio_led_platform_data dreamplug_led_data = {
+ .leds = dreamplug_led_pins,
+ .num_leds = ARRAY_SIZE(dreamplug_led_pins),
+};
+
+static struct platform_device dreamplug_leds = {
+ .name = "leds-gpio",
+ .id = -1,
+ .dev = {
+ .platform_data = &dreamplug_led_data,
+ }
+};
+
+static unsigned int dreamplug_mpp_config[] __initdata = {
+ MPP0_SPI_SCn,
+ MPP1_SPI_MOSI,
+ MPP2_SPI_SCK,
+ MPP3_SPI_MISO,
+ MPP47_GPIO, /* Bluetooth LED */
+ MPP48_GPIO, /* Wifi LED */
+ MPP49_GPIO, /* Wifi AP LED */
+ 0
+};
+
+static void __init dreamplug_init(void)
+{
+ /*
+ * Basic setup. Needs to be called early.
+ */
+ kirkwood_mpp_conf(dreamplug_mpp_config);
+
+ kirkwood_uart0_init();
+
+ spi_register_board_info(dreamplug_spi_slave_info,
+ ARRAY_SIZE(dreamplug_spi_slave_info));
+ kirkwood_spi_init();
+
+ kirkwood_ehci_init();
+ kirkwood_ge00_init(&dreamplug_ge00_data);
+ kirkwood_ge01_init(&dreamplug_ge01_data);
+ kirkwood_sata_init(&dreamplug_sata_data);
+ kirkwood_sdio_init(&dreamplug_mvsdio_data);
+
+ platform_device_register(&dreamplug_leds);
+}
+
+static void __init kirkwood_dt_init(void)
+{
+ kirkwood_init();
+
+ if (!of_machine_is_compatible("kirkwood,dreamplug"))
+ dreamplug_init();
+
+ of_platform_populate(NULL, kirkwood_dt_match_table, NULL, NULL);
+}
+
+static const char *kirkwood_dt_board_compat[] = {
+ "marvell,dreamplug",
+ NULL
+};
+
+DT_MACHINE_START(KIRKWOOD_DT, "Marvell Kirkwood (Flattened Device Tree)")
+ /* Maintainer: Jason Cooper <jason at lakedaemon.net> */
+ .map_io = kirkwood_map_io,
+ .init_early = kirkwood_init_early,
+ .init_irq = kirkwood_init_irq,
+ .timer = &kirkwood_timer,
+ .init_machine = kirkwood_dt_init,
+ .restart = kirkwood_restart,
+ .dt_compat = kirkwood_dt_board_compat,
+MACHINE_END
--
1.7.3.4
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