Layerscape SoCs feature the same watchdog as the i.MX SoCs, but in big endian mode. Add support for it.
Signed-off-by: Sascha Hauer <[email protected]> --- drivers/watchdog/Kconfig | 2 +- drivers/watchdog/Makefile | 1 + drivers/watchdog/imxwd.c | 12 ++++++++++-- 3 files changed, 12 insertions(+), 3 deletions(-) diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig index 2793ee93d9..04efb1a3c8 100644 --- a/drivers/watchdog/Kconfig +++ b/drivers/watchdog/Kconfig @@ -48,7 +48,7 @@ config WATCHDOG_MXS28 config WATCHDOG_IMX bool "i.MX watchdog" - depends on ARCH_IMX + depends on ARCH_IMX || ARCH_LAYERSCAPE help Add support for watchdog found on Freescale i.MX SoCs. diff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile index 69189ba1f3..6c8d36c8b8 100644 --- a/drivers/watchdog/Makefile +++ b/drivers/watchdog/Makefile @@ -7,6 +7,7 @@ obj-$(CONFIG_WATCHDOG_MXS28) += im28wd.o obj-$(CONFIG_WATCHDOG_DW) += dw_wdt.o obj-$(CONFIG_WATCHDOG_JZ4740) += jz4740.o obj-$(CONFIG_WATCHDOG_IMX_RESET_SOURCE) += imxwd.o +obj-$(CONFIG_WATCHDOG_IMX) += imxwd.o obj-$(CONFIG_WATCHDOG_ORION) += orion_wdt.o obj-$(CONFIG_ARCH_BCM283X) += bcm2835_wdt.o obj-$(CONFIG_RAVE_SP_WATCHDOG) += rave-sp-wdt.o diff --git a/drivers/watchdog/imxwd.c b/drivers/watchdog/imxwd.c index e2c3b9f96e..77a3bd76ce 100644 --- a/drivers/watchdog/imxwd.c +++ b/drivers/watchdog/imxwd.c @@ -38,6 +38,7 @@ struct imx_wd { const struct imx_wd_ops *ops; struct restart_handler restart; bool ext_reset; + bool bigendian; }; #define to_imx_wd(h) container_of(h, struct imx_wd, wd) @@ -68,12 +69,18 @@ struct imx_wd { static void imxwd_write(struct imx_wd *priv, int reg, uint16_t val) { - writew(val, priv->base + reg); + if (priv->bigendian) + out_be16(priv->base + reg, val); + else + writew(val, priv->base + reg); } static uint16_t imxwd_read(struct imx_wd *priv, int reg) { - return readw(priv->base + reg); + if (priv->bigendian) + return in_be16(priv->base + reg); + else + return readw(priv->base + reg); } static int imx1_watchdog_set_timeout(struct imx_wd *priv, unsigned timeout) @@ -230,6 +237,7 @@ static int imx_wd_probe(struct device_d *dev) priv->wd.timeout_max = priv->ops->timeout_max; priv->wd.hwdev = dev; priv->dev = dev; + priv->bigendian = of_device_is_big_endian(dev->device_node); priv->ext_reset = of_property_read_bool(dev->device_node, "fsl,ext-reset-output"); -- 2.20.1 _______________________________________________ barebox mailing list [email protected] http://lists.infradead.org/mailman/listinfo/barebox
