mx25: add support for the DryIce rtc

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

4 files changed, 24 insertions, 0 deletions

diff --git a/arch/arm/mach-mx25/clock.c b/arch/arm/mach-mx25/clock.c
index 6acc88bcdc40..744b52a613fc 100644
--- a/arch/arm/mach-mx25/clock.c
+++ b/arch/arm/mach-mx25/clock.c
@@ -182,6 +182,7 @@ DEFINE_CLOCK(kpp_clk,	 0, CCM_CGCR1, 28, get_rate_ipg, NULL, NULL);
 DEFINE_CLOCK(tsc_clk,    0, CCM_CGCR2, 13, get_rate_ipg, NULL, NULL);
 DEFINE_CLOCK(i2c_clk,    0, CCM_CGCR0,  6, get_rate_i2c, NULL, NULL);
 DEFINE_CLOCK(fec_clk,    0, CCM_CGCR1, 15, get_rate_ipg, NULL, &fec_ahb_clk);
+DEFINE_CLOCK(dryice_clk, 0, CCM_CGCR1,  8, get_rate_ipg, NULL, NULL);
 
 #define _REGISTER_CLOCK(d, n, c)        \
         {                               \
@@ -214,6 +215,7 @@ static struct clk_lookup lookups[] = {
         _REGISTER_CLOCK("imx-i2c.1", NULL, i2c_clk)
         _REGISTER_CLOCK("imx-i2c.2", NULL, i2c_clk)
         _REGISTER_CLOCK("fec.0", NULL, fec_clk)
+        _REGISTER_CLOCK("imxdi_rtc.0", NULL, dryice_clk)
 };
 
 int __init mx25_clocks_init(void)
diff --git a/arch/arm/mach-mx25/devices.c b/arch/arm/mach-mx25/devices.c
index dd4069725ef5..b0b75fc99058 100644
--- a/arch/arm/mach-mx25/devices.c
+++ b/arch/arm/mach-mx25/devices.c
@@ -458,3 +458,22 @@ struct platform_device mxc_nand_device = {
         .num_resources  = ARRAY_SIZE(mxc_nand_resources),
         .resource       = mxc_nand_resources,
 };
+
+static struct resource mx25_rtc_resources[] = {
+        {
+                .start  = MX25_DRYICE_BASE_ADDR,
+                .end    = MX25_DRYICE_BASE_ADDR + 0x40,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .start  = MX25_INT_DRYICE,
+                .flags  = IORESOURCE_IRQ
+        },
+};
+
+struct platform_device mx25_rtc_device = {
+        .name   = "imxdi_rtc",
+        .id     = 0,
+        .num_resources  = ARRAY_SIZE(mx25_rtc_resources),
+        .resource       = mx25_rtc_resources,
+};
diff --git a/arch/arm/mach-mx25/devices.h b/arch/arm/mach-mx25/devices.h
index 8f5530062b43..37e6a0821447 100644
--- a/arch/arm/mach-mx25/devices.h
+++ b/arch/arm/mach-mx25/devices.h
@@ -19,3 +19,4 @@ extern struct platform_device mxc_i2c_device1;
 extern struct platform_device mxc_i2c_device2;
 extern struct platform_device mx25_fec_device;
 extern struct platform_device mxc_nand_device;
+extern struct platform_device mx25_rtc_device;
diff --git a/arch/arm/plat-mxc/include/mach/mx25.h b/arch/arm/plat-mxc/include/mach/mx25.h
index 021d208e86bc..61052a33979c 100644
--- a/arch/arm/plat-mxc/include/mach/mx25.h
+++ b/arch/arm/plat-mxc/include/mach/mx25.h
@@ -32,7 +32,9 @@
 
 #define MX25_FEC_BASE_ADDR              0x50038000
 #define MX25_NFC_BASE_ADDR              0xbb000000
+#define MX25_DRYICE_BASE_ADDR           0x53ffc000
 
+#define MX25_INT_DRYICE 25
 #define MX25_INT_FEC    57
 #define MX25_INT_NANDFC 33