MIPS: BCM63XX: provide periph clock as refclk for uart

Add a lookup as "refclk" to describe its function for the uarts.
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-mips@linux-mips.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-serial@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: bcm-kernel-feedback-list@broadcom.com
Patchwork: https://patchwork.linux-mips.org/patch/17326/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: James Hogan <jhogan@kernel.org>

arch/mips/bcm63xx/clk.c

@@ -363,6 +363,8 @@ EXPORT_SYMBOL_GPL(clk_round_rate);
 static struct clk_lookup bcm3368_clks[] = {
 	/* fixed rate clocks */
 	CLKDEV_INIT(NULL, "periph", &clk_periph),
+	CLKDEV_INIT("bcm63xx_uart.0", "refclk", &clk_periph),
+	CLKDEV_INIT("bcm63xx_uart.1", "refclk", &clk_periph),
 	/* gated clocks */
 	CLKDEV_INIT(NULL, "enet0", &clk_enet0),
 	CLKDEV_INIT(NULL, "enet1", &clk_enet1),
@@ -376,6 +378,8 @@ static struct clk_lookup bcm3368_clks[] = {
 static struct clk_lookup bcm6328_clks[] = {
 	/* fixed rate clocks */
 	CLKDEV_INIT(NULL, "periph", &clk_periph),
+	CLKDEV_INIT("bcm63xx_uart.0", "refclk", &clk_periph),
+	CLKDEV_INIT("bcm63xx_uart.1", "refclk", &clk_periph),
 	/* gated clocks */
 	CLKDEV_INIT(NULL, "enetsw", &clk_enetsw),
 	CLKDEV_INIT(NULL, "usbh", &clk_usbh),
@@ -387,6 +391,7 @@ static struct clk_lookup bcm6328_clks[] = {
 static struct clk_lookup bcm6338_clks[] = {
 	/* fixed rate clocks */
 	CLKDEV_INIT(NULL, "periph", &clk_periph),
+	CLKDEV_INIT("bcm63xx_uart.0", "refclk", &clk_periph),
 	/* gated clocks */
 	CLKDEV_INIT(NULL, "enet0", &clk_enet0),
 	CLKDEV_INIT(NULL, "enet1", &clk_enet1),
@@ -399,6 +404,7 @@ static struct clk_lookup bcm6338_clks[] = {
 static struct clk_lookup bcm6345_clks[] = {
 	/* fixed rate clocks */
 	CLKDEV_INIT(NULL, "periph", &clk_periph),
+	CLKDEV_INIT("bcm63xx_uart.0", "refclk", &clk_periph),
 	/* gated clocks */
 	CLKDEV_INIT(NULL, "enet0", &clk_enet0),
 	CLKDEV_INIT(NULL, "enet1", &clk_enet1),
@@ -411,6 +417,7 @@ static struct clk_lookup bcm6345_clks[] = {
 static struct clk_lookup bcm6348_clks[] = {
 	/* fixed rate clocks */
 	CLKDEV_INIT(NULL, "periph", &clk_periph),
+	CLKDEV_INIT("bcm63xx_uart.0", "refclk", &clk_periph),
 	/* gated clocks */
 	CLKDEV_INIT(NULL, "enet0", &clk_enet0),
 	CLKDEV_INIT(NULL, "enet1", &clk_enet1),
@@ -423,6 +430,8 @@ static struct clk_lookup bcm6348_clks[] = {
 static struct clk_lookup bcm6358_clks[] = {
 	/* fixed rate clocks */
 	CLKDEV_INIT(NULL, "periph", &clk_periph),
+	CLKDEV_INIT("bcm63xx_uart.0", "refclk", &clk_periph),
+	CLKDEV_INIT("bcm63xx_uart.1", "refclk", &clk_periph),
 	/* gated clocks */
 	CLKDEV_INIT(NULL, "enet0", &clk_enet0),
 	CLKDEV_INIT(NULL, "enet1", &clk_enet1),
@@ -436,6 +445,8 @@ static struct clk_lookup bcm6358_clks[] = {
 static struct clk_lookup bcm6362_clks[] = {
 	/* fixed rate clocks */
 	CLKDEV_INIT(NULL, "periph", &clk_periph),
+	CLKDEV_INIT("bcm63xx_uart.0", "refclk", &clk_periph),
+	CLKDEV_INIT("bcm63xx_uart.1", "refclk", &clk_periph),
 	/* gated clocks */
 	CLKDEV_INIT(NULL, "enetsw", &clk_enetsw),
 	CLKDEV_INIT(NULL, "usbh", &clk_usbh),
@@ -449,6 +460,8 @@ static struct clk_lookup bcm6362_clks[] = {
 static struct clk_lookup bcm6368_clks[] = {
 	/* fixed rate clocks */
 	CLKDEV_INIT(NULL, "periph", &clk_periph),
+	CLKDEV_INIT("bcm63xx_uart.0", "refclk", &clk_periph),
+	CLKDEV_INIT("bcm63xx_uart.1", "refclk", &clk_periph),
 	/* gated clocks */
 	CLKDEV_INIT(NULL, "enetsw", &clk_enetsw),
 	CLKDEV_INIT(NULL, "usbh", &clk_usbh),