[PATCH 3/4] ARM: msm: Add devicetree support for msm8660-surf

David Brown
2011-08-12T23:00:07Z

Adds support for booting via device tree with a simple serial console.

Signed-off-by: David Brown <davidb@codeaurora.org>
---
arch/arm/boot/dts/msm8660-surf.dts | 24 +++++++++++++++
arch/arm/mach-msm/board-msm8x60.c | 58 +++++++++++++++++++++++++++++++----
2 files changed, 75 insertions(+), 7 deletions(-)
create mode 100644 arch/arm/boot/dts/msm8660-surf.dts

diff --git a/arch/arm/boot/dts/msm8660-surf.dts b/arch/arm/boot/dts/msm8660-surf.dts
new file mode 100644
index 0000000..308d867
--- /dev/null
+++ b/arch/arm/boot/dts/msm8660-surf.dts
@@ -0,0 +1,24 @@
+/dts-v1/;
+
+/include/ "skeleton.dtsi"
+
+/ {
+ model = "Qualcomm MSM8660 SURF";
+ compatible = "qcom,msm8660-surf", "qcom,msm8660";
+ interrupt-parent = <&intc>;
+
+ intc: interrupt-controller at 02080000 {
+ compatible = "qcom,msm-8660-qgic";
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ reg = < 0x02080000 0x1000 >,
+ < 0x02081000 0x1000 >;
+ };
+
+ serial at 19c400000 {
+ compatible = "qcom,msm-hsuart-lite";
+ reg = <0x19c40000 0x1000>,
+ <0x19c00000 0x1000>;
+ interrupts = <195>;
+ };
+};
diff --git a/arch/arm/mach-msm/board-msm8x60.c b/arch/arm/mach-msm/board-msm8x60.c
index 1163b6f..10fa8f6 100644
--- a/arch/arm/mach-msm/board-msm8x60.c
+++ b/arch/arm/mach-msm/board-msm8x60.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2010, Code Aurora Forum. All rights reserved.
+/* Copyright (c) 2010, 2011, Code Aurora Forum. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
@@ -8,18 +8,16 @@
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
*/

#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>

#include <asm/mach-types.h>
#include <asm/mach/arch.h>
@@ -64,6 +62,41 @@ static void __init msm8x60_init(void)
{
}

+#ifdef CONFIG_OF
+static struct of_dev_auxdata msm_auxdata_lookup[] __initdata = {
+ {}
+};
+
+static struct of_device_id msm_dt_gic_match[] __initdata = {
+ { .compatible = "qcom,msm-8660-qgic", },
+ {}
+};
+
+static void __init msm8x60_dt_init(void)
+{
+ struct device_node *node;
+
+ node = of_find_matching_node_by_address(NULL, msm_dt_gic_match,
+ MSM8X60_QGIC_DIST_PHYS);
+ if (node)
+ irq_domain_add_simple(node, GIC_SPI_START);
+
+ if (of_machine_is_compatible("qcom,msm8660-surf")) {
+ printk(KERN_INFO "Init surf UART registers\n");
+ msm8x60_init_uart12dm();
+ }
+
+ of_platform_populate(NULL, of_default_bus_match_table,
+ msm_auxdata_lookup, NULL);
+}
+
+static const char *msm8x60_fluid_match[] __initdata = {
+ "qcom,msm8660-fluid",
+ "qcom,msm8660-surf",
+ NULL
+};
+#endif /* CONFIG_OF */
+
MACHINE_START(MSM8X60_RUMI3, "QCT MSM8X60 RUMI3")
.map_io = msm8x60_map_io,
.init_irq = msm8x60_init_irq,
@@ -91,3 +124,14 @@ MACHINE_START(MSM8X60_FFA, "QCT MSM8X60 FFA")
.init_machine = msm8x60_init,
.timer = &msm_timer,
MACHINE_END
+
+#ifdef CONFIG_OF
+/* TODO: General device tree support for all MSM. */
+DT_MACHINE_START(MSM_DT, "Qualcomm MSM (Flattened Device Tree)")
+ .map_io = msm8x60_map_io,
+ .init_irq = msm8x60_init_irq,
+ .init_machine = msm8x60_dt_init,
+ .timer = &msm_timer,
+ .dt_compat = msm8x60_fluid_match,
+MACHINE_END
+#endif /* CONFIG_OF */