ARM: mx31: Replace clk_register_clkdev with clock DT lookup

Similarly as it was done for mx6q, use a DT lookup in order to make maintainance
task for the clock devices easier.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

3 files changed, 28 insertions, 16 deletions

diff --git a/arch/arm/boot/dts/imx31.dtsi b/arch/arm/boot/dts/imx31.dtsi
index eef7099f3e3c..454c2d175402 100644
--- a/arch/arm/boot/dts/imx31.dtsi
+++ b/arch/arm/boot/dts/imx31.dtsi
@@ -45,6 +45,8 @@
                                 compatible = "fsl,imx31-uart", "fsl,imx21-uart";
                                 reg = <0x43f90000 0x4000>;
                                 interrupts = <45>;
+                                clocks = <&clks 10>, <&clks 30>;
+                                clock-names = "ipg", "per";
                                 status = "disabled";
                         };
 
@@ -52,12 +54,16 @@
                                 compatible = "fsl,imx31-uart", "fsl,imx21-uart";
                                 reg = <0x43f94000 0x4000>;
                                 interrupts = <32>;
+                                clocks = <&clks 10>, <&clks 31>;
+                                clock-names = "ipg", "per";
                                 status = "disabled";
                         };
 
                         uart4: serial@43fb0000 {
                                 compatible = "fsl,imx31-uart", "fsl,imx21-uart";
                                 reg = <0x43fb0000 0x4000>;
+                                clocks = <&clks 10>, <&clks 49>;
+                                clock-names = "ipg", "per";
                                 interrupts = <46>;
                                 status = "disabled";
                         };
@@ -66,6 +72,8 @@
                                 compatible = "fsl,imx31-uart", "fsl,imx21-uart";
                                 reg = <0x43fb4000 0x4000>;
                                 interrupts = <47>;
+                                clocks = <&clks 10>, <&clks 50>;
+                                clock-names = "ipg", "per";
                                 status = "disabled";
                         };
                 };
@@ -81,8 +89,17 @@
                                 compatible = "fsl,imx31-uart", "fsl,imx21-uart";
                                 reg = <0x5000c000 0x4000>;
                                 interrupts = <18>;
+                                clocks = <&clks 10>, <&clks 48>;
+                                clock-names = "ipg", "per";
                                 status = "disabled";
                         };
+
+                        clks: ccm@53f80000{
+                                compatible = "fsl,imx31-ccm";
+                                reg = <0x53f80000 0x4000>;
+                                interrupts = <0 31 0x04 0 53 0x04>;
+                                #clock-cells = <1>;
+                        };
                 };
         };
 };
diff --git a/arch/arm/mach-imx/clk-imx31.c b/arch/arm/mach-imx/clk-imx31.c
index 590dd876d66a..a42494d22c59 100644
--- a/arch/arm/mach-imx/clk-imx31.c
+++ b/arch/arm/mach-imx/clk-imx31.c
@@ -46,11 +46,13 @@ enum mx31_clks {
 };
 
 static struct clk *clk[clk_max];
+static struct clk_onecell_data clk_data;
 
 int __init mx31_clocks_init(unsigned long fref)
 {
         void __iomem *base = MX31_IO_ADDRESS(MX31_CCM_BASE_ADDR);
         int i;
+        struct device_node *np;
 
         clk[dummy] = imx_clk_fixed("dummy", 0);
         clk[ckih] = imx_clk_fixed("ckih", fref);
@@ -117,6 +119,14 @@ int __init mx31_clocks_init(unsigned long fref)
                         pr_err("imx31 clk %d: register failed with %ld\n",
                                 i, PTR_ERR(clk[i]));
 
+        np = of_find_compatible_node(NULL, NULL, "fsl,imx31-ccm");
+
+        if (np) {
+                clk_data.clks = clk;
+                clk_data.clk_num = ARRAY_SIZE(clk);
+                of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
+        }
+
         clk_register_clkdev(clk[gpt_gate], "per", "imx-gpt.0");
         clk_register_clkdev(clk[ipg], "ipg", "imx-gpt.0");
         clk_register_clkdev(clk[cspi1_gate], NULL, "imx31-cspi.0");
diff --git a/arch/arm/mach-imx/imx31-dt.c b/arch/arm/mach-imx/imx31-dt.c
index af476de2570e..dc083d33a758 100644
--- a/arch/arm/mach-imx/imx31-dt.c
+++ b/arch/arm/mach-imx/imx31-dt.c
@@ -18,24 +18,9 @@
 #include "common.h"
 #include "mx31.h"
 
-static const struct of_dev_auxdata imx31_auxdata_lookup[] __initconst = {
-        OF_DEV_AUXDATA("fsl,imx31-uart", MX31_UART1_BASE_ADDR,
-                        "imx21-uart.0", NULL),
-        OF_DEV_AUXDATA("fsl,imx31-uart", MX31_UART2_BASE_ADDR,
-                        "imx21-uart.1", NULL),
-        OF_DEV_AUXDATA("fsl,imx31-uart", MX31_UART3_BASE_ADDR,
-                        "imx21-uart.2", NULL),
-        OF_DEV_AUXDATA("fsl,imx31-uart", MX31_UART4_BASE_ADDR,
-                        "imx21-uart.3", NULL),
-        OF_DEV_AUXDATA("fsl,imx31-uart", MX31_UART5_BASE_ADDR,
-                        "imx21-uart.4", NULL),
-        { /* sentinel */ }
-};
-
 static void __init imx31_dt_init(void)
 {
-        of_platform_populate(NULL, of_default_bus_match_table,
-                             imx31_auxdata_lookup, NULL);
+        of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
 }
 
 static void __init imx31_timer_init(void)