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 --- arch/arm/dts/armada-37xx.dtsi | 3 +-- drivers/watchdog/armada-37xx-wdt.c | 7 ++----- 2 files changed, 3 insertions(+), 7 deletions(-)
diff --git a/arch/arm/dts/armada-37xx.dtsi b/arch/arm/dts/armada-37xx.dtsi index a427d9cf6218..4c686c380cee 100644 --- 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 6b5e1ab6fc35..2e119b9b5aad 100644 --- 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;