watchdog: armada_37xx: Convert to official DT bindings

Official DT bindings have only one reg property: watchdog address space.
Convert armada-37xx-wdt.c driver to offical DT bindings and access sel_reg
register via MVEBU_REGISTER() macro, as its value (required by U-Boot
driver) is not in DT yet. In later stage can be driver cleaned to not use
it.

This change would allow U-Boot to use A3720 watchdog DTS structure from
Linux kernel.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>

diff --git a/arch/arm/dts/armada-37xx.dtsi b/arch/arm/dts/armada-37xx.dtsi
index a427d9c..4c686c3 100644 (file)
--- a/arch/arm/dts/armada-37xx.dtsi
+++ b/arch/arm/dts/armada-37xx.dtsi
@@ -109,8 +109,7 @@
 
                        wdt: watchdog-timer@8300 {
                                compatible = "marvell,armada-3700-wdt";
-                               reg = <0xd064 0x4>,
-                                     <0x8300 0x40>;
+                               reg = <0x8300 0x40>;
                        };
 
                        nb_periph_clk: nb-periph-clk@13000 {

diff --git a/drivers/watchdog/armada-37xx-wdt.c b/drivers/watchdog/armada-37xx-wdt.c
index 6b5e1ab..2e119b9 100644 (file)
--- a/drivers/watchdog/armada-37xx-wdt.c
+++ b/drivers/watchdog/armada-37xx-wdt.c
@@ -155,12 +155,9 @@ static int a37xx_wdt_probe(struct udevice *dev)
        struct a37xx_wdt *priv = dev_get_priv(dev);
        fdt_addr_t addr;
 
-       addr = dev_read_addr_index(dev, 0);
-       if (addr == FDT_ADDR_T_NONE)
-               goto err;
-       priv->sel_reg = (void __iomem *)addr;
+       priv->sel_reg = (void __iomem *)MVEBU_REGISTER(0x0d064);
 
-       addr = dev_read_addr_index(dev, 1);
+       addr = dev_read_addr(dev);
        if (addr == FDT_ADDR_T_NONE)
                goto err;
        priv->reg = (void __iomem *)addr;