ARM: mxs: add initial device tree support for imx23-evk board

It adds initial device tree support for imx23-evk board, and only
serial console is enabled.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Marek Vasut <marex@denx.de>

2 files changed, 25 insertions, 0 deletions

diff --git a/arch/arm/mach-mxs/Kconfig b/arch/arm/mach-mxs/Kconfig
index 15bb4e211a2..8138a13e23c 100644
--- a/arch/arm/mach-mxs/Kconfig
+++ b/arch/arm/mach-mxs/Kconfig
@@ -23,6 +23,7 @@ comment "MXS platforms:"
 
 config MACH_MXS_DT
         bool "Support MXS platforms from device tree"
+        select SOC_IMX23
         select SOC_IMX28
         select USE_OF
         help
diff --git a/arch/arm/mach-mxs/mach-mxs.c b/arch/arm/mach-mxs/mach-mxs.c
index 5d81a23943c..182ea7529d2 100644
--- a/arch/arm/mach-mxs/mach-mxs.c
+++ b/arch/arm/mach-mxs/mach-mxs.c
@@ -41,6 +41,15 @@ static void __init mxs_dt_init_irq(void)
         of_irq_init(mxs_irq_match);
 }
 
+static void __init imx23_timer_init(void)
+{
+        mx23_clocks_init();
+}
+
+static struct sys_timer imx23_timer = {
+        .init = imx23_timer_init,
+};
+
 static void __init imx28_timer_init(void)
 {
         mx28_clocks_init();
@@ -69,12 +78,27 @@ static void __init mxs_machine_init(void)
                                 NULL, NULL);
 }
 
+static const char *imx23_dt_compat[] __initdata = {
+        "fsl,imx23-evk",
+        "fsl,imx23",
+        NULL,
+};
+
 static const char *imx28_dt_compat[] __initdata = {
         "fsl,imx28-evk",
         "fsl,imx28",
         NULL,
 };
 
+DT_MACHINE_START(IMX23, "Freescale i.MX23 (Device Tree)")
+        .map_io         = mx23_map_io,
+        .init_irq       = mxs_dt_init_irq,
+        .timer          = &imx23_timer,
+        .init_machine   = mxs_machine_init,
+        .dt_compat      = imx23_dt_compat,
+        .restart        = mxs_restart,
+MACHINE_END
+
 DT_MACHINE_START(IMX28, "Freescale i.MX28 (Device Tree)")
         .map_io         = mx28_map_io,
         .init_irq       = mxs_dt_init_irq,