[POWERPC] ucc_geth: use rx-clock-name and tx-clock-name device tree properties

Updates the ucc_geth device driver to check the new rx-clock-name and
tx-clock-name properties first.  If present, it uses the new function
qe_clock_source() to obtain the clock source.  Otherwise, it checks the
deprecated rx-clock and tx-clock properties.

Update the device trees for 832x, 836x, and 8568 to contain the new property
names only.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

arch/powerpc/boot/dts/mpc832x_mds.dts

@@ -228,8 +228,8 @@ enet0: ucc@2200 {
 			interrupts = <22>;
 			interrupt-parent = < &qeic >;
 			local-mac-address = [ 00 00 00 00 00 00 ];
-			rx-clock = <19>;
-			tx-clock = <1a>;
+			rx-clock-name = "clk9";
+			tx-clock-name = "clk10";
 			phy-handle = < &phy3 >;
 			pio-handle = < &pio3 >;
 		};
@@ -244,8 +244,8 @@ enet1: ucc@3200 {
 			interrupts = <23>;
 			interrupt-parent = < &qeic >;
 			local-mac-address = [ 00 00 00 00 00 00 ];
-			rx-clock = <17>;
-			tx-clock = <18>;
+			rx-clock-name = "clk7";
+			tx-clock-name = "clk8";
 			phy-handle = < &phy4 >;
 			pio-handle = < &pio4 >;
 		};

arch/powerpc/boot/dts/mpc832x_rdb.dts

@@ -209,8 +209,8 @@ enet0: ucc@3000 {
 			interrupts = <21>;
 			interrupt-parent = <&qeic>;
 			local-mac-address = [ 00 00 00 00 00 00 ];
-			rx-clock = <20>;
-			tx-clock = <13>;
+			rx-clock-name = "clk16";
+			tx-clock-name = "clk3";
 			phy-handle = <&phy00>;
 			pio-handle = <&ucc2pio>;
 		};
@@ -225,8 +225,8 @@ enet1: ucc@2200 {
 			interrupts = <22>;
 			interrupt-parent = <&qeic>;
 			local-mac-address = [ 00 00 00 00 00 00 ];
-			rx-clock = <19>;
-			tx-clock = <1a>;
+			rx-clock-name = "clk9";
+			tx-clock-name = "clk10";
 			phy-handle = <&phy04>;
 			pio-handle = <&ucc3pio>;
 		};

arch/powerpc/boot/dts/mpc836x_mds.dts

@@ -259,8 +259,8 @@ enet0: ucc@2000 {
 			interrupts = <20>;
 			interrupt-parent = < &qeic >;
 			local-mac-address = [ 00 00 00 00 00 00 ];
-			rx-clock = <0>;
-			tx-clock = <19>;
+			rx-clock-name = "none";
+			tx-clock-name = "clk9";
 			phy-handle = < &phy0 >;
 			phy-connection-type = "rgmii-id";
 			pio-handle = < &pio1 >;
@@ -276,8 +276,8 @@ enet1: ucc@3000 {
 			interrupts = <21>;
 			interrupt-parent = < &qeic >;
 			local-mac-address = [ 00 00 00 00 00 00 ];
-			rx-clock = <0>;
-			tx-clock = <14>;
+			rx-clock-name = "none";
+			tx-clock-name = "clk4";
 			phy-handle = < &phy1 >;
 			phy-connection-type = "rgmii-id";
 			pio-handle = < &pio2 >;

arch/powerpc/boot/dts/mpc8568mds.dts

@@ -327,8 +327,8 @@ enet2: ucc@2000 {
 			interrupts = <20>;
 			interrupt-parent = <&qeic>;
 			local-mac-address = [ 00 00 00 00 00 00 ];
-			rx-clock = <0>;
-			tx-clock = <20>;
+			rx-clock-name = "none";
+			tx-clock-name = "clk16";
 			pio-handle = <&pio1>;
 			phy-handle = <&phy0>;
 			phy-connection-type = "rgmii-id";
@@ -344,8 +344,8 @@ enet3: ucc@3000 {
 			interrupts = <21>;
 			interrupt-parent = <&qeic>;
 			local-mac-address = [ 00 00 00 00 00 00 ];
-			rx-clock = <0>;
-			tx-clock = <20>;
+			rx-clock-name = "none";
+			tx-clock-name = "clk16";
 			pio-handle = <&pio2>;
 			phy-handle = <&phy1>;
 			phy-connection-type = "rgmii-id";

drivers/net/ucc_geth.c

@@ -3822,6 +3822,7 @@ static int ucc_geth_probe(struct of_device* ofdev, const struct of_device_id *ma
 	int err, ucc_num, max_speed = 0;
 	const phandle *ph;
 	const unsigned int *prop;
+	const char *sprop;
 	const void *mac_addr;
 	phy_interface_t phy_interface;
 	static const int enet_to_speed[] = {
@@ -3854,10 +3855,56 @@ static int ucc_geth_probe(struct of_device* ofdev, const struct of_device_id *ma
 
 	ug_info->uf_info.ucc_num = ucc_num;
 
+	sprop = of_get_property(np, "rx-clock-name", NULL);
+	if (sprop) {
+		ug_info->uf_info.rx_clock = qe_clock_source(sprop);
+		if ((ug_info->uf_info.rx_clock < QE_CLK_NONE) ||
+		    (ug_info->uf_info.rx_clock > QE_CLK24)) {
+			printk(KERN_ERR
+				"ucc_geth: invalid rx-clock-name property\n");
+			return -EINVAL;
+		}
+	} else {
 		prop = of_get_property(np, "rx-clock", NULL);
+		if (!prop) {
+			/* If both rx-clock-name and rx-clock are missing,
+			   we want to tell people to use rx-clock-name. */
+			printk(KERN_ERR
+				"ucc_geth: missing rx-clock-name property\n");
+			return -EINVAL;
+		}
+		if ((*prop < QE_CLK_NONE) || (*prop > QE_CLK24)) {
+			printk(KERN_ERR
+				"ucc_geth: invalid rx-clock propperty\n");
+			return -EINVAL;
+		}
 		ug_info->uf_info.rx_clock = *prop;
-	prop = of_get_property(np, "tx-clock", NULL);
+	}
+
+	sprop = of_get_property(np, "tx-clock-name", NULL);
+	if (sprop) {
+		ug_info->uf_info.tx_clock = qe_clock_source(sprop);
+		if ((ug_info->uf_info.tx_clock < QE_CLK_NONE) ||
+		    (ug_info->uf_info.tx_clock > QE_CLK24)) {
+			printk(KERN_ERR
+				"ucc_geth: invalid tx-clock-name property\n");
+			return -EINVAL;
+		}
+	} else {
+		prop = of_get_property(np, "rx-clock", NULL);
+		if (!prop) {
+			printk(KERN_ERR
+				"ucc_geth: mising tx-clock-name property\n");
+			return -EINVAL;
+		}
+		if ((*prop < QE_CLK_NONE) || (*prop > QE_CLK24)) {
+			printk(KERN_ERR
+				"ucc_geth: invalid tx-clock property\n");
+			return -EINVAL;
+		}
 		ug_info->uf_info.tx_clock = *prop;
+	}
+
 	err = of_address_to_resource(np, 0, &res);
 	if (err)
 		return -EINVAL;