stm32mp1: pwr: use the last binding for pwr
Update the driver to use the latest binding from kernel v5.5-rc1:
no more use syscon or regmap to access to pwr register and
only one pwr_regulators node with the compatibility "st,stm32mp1,pwr-reg"
is available.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
diff --git a/arch/arm/mach-stm32mp/include/mach/stm32.h b/arch/arm/mach-stm32mp/include/mach/stm32.h
index 88126b8..f063600 100644
--- a/arch/arm/mach-stm32mp/include/mach/stm32.h
+++ b/arch/arm/mach-stm32mp/include/mach/stm32.h
@@ -37,7 +37,6 @@
/* enumerated used to identify the SYSCON driver instance */
enum {
STM32MP_SYSCON_UNKNOWN,
- STM32MP_SYSCON_PWR,
STM32MP_SYSCON_SYSCFG,
};
diff --git a/arch/arm/mach-stm32mp/pwr_regulator.c b/arch/arm/mach-stm32mp/pwr_regulator.c
index 4559ef5..b52e1e8 100644
--- a/arch/arm/mach-stm32mp/pwr_regulator.c
+++ b/arch/arm/mach-stm32mp/pwr_regulator.c
@@ -6,8 +6,8 @@
#include <common.h>
#include <dm.h>
#include <errno.h>
-#include <regmap.h>
#include <syscon.h>
+#include <asm/io.h>
#include <dm/device_compat.h>
#include <linux/err.h>
#include <power/pmic.h>
@@ -28,7 +28,7 @@
};
struct stm32mp_pwr_priv {
- struct regmap *regmap;
+ fdt_addr_t base;
};
static int stm32mp_pwr_write(struct udevice *dev, uint reg,
@@ -40,7 +40,9 @@
if (len != 4)
return -EINVAL;
- return regmap_write(priv->regmap, STM32MP_PWR_CR3, val);
+ writel(val, priv->base + STM32MP_PWR_CR3);
+
+ return 0;
}
static int stm32mp_pwr_read(struct udevice *dev, uint reg, uint8_t *buff,
@@ -51,21 +53,18 @@
if (len != 4)
return -EINVAL;
- return regmap_read(priv->regmap, STM32MP_PWR_CR3, (u32 *)buff);
+ *(u32 *)buff = readl(priv->base + STM32MP_PWR_CR3);
+
+ return 0;
}
static int stm32mp_pwr_ofdata_to_platdata(struct udevice *dev)
{
struct stm32mp_pwr_priv *priv = dev_get_priv(dev);
- struct regmap *regmap;
- regmap = syscon_get_regmap_by_driver_data(STM32MP_SYSCON_PWR);
- if (IS_ERR(regmap)) {
- pr_err("%s: unable to find regmap (%ld)\n", __func__,
- PTR_ERR(regmap));
- return PTR_ERR(regmap);
- }
- priv->regmap = regmap;
+ priv->base = dev_read_addr(dev);
+ if (priv->base == FDT_ADDR_T_NONE)
+ return -EINVAL;
return 0;
}
diff --git a/arch/arm/mach-stm32mp/syscon.c b/arch/arm/mach-stm32mp/syscon.c
index 6070837..3e61ce4 100644
--- a/arch/arm/mach-stm32mp/syscon.c
+++ b/arch/arm/mach-stm32mp/syscon.c
@@ -9,7 +9,6 @@
#include <asm/arch/stm32.h>
static const struct udevice_id stm32mp_syscon_ids[] = {
- { .compatible = "st,stm32mp1-pwr", .data = STM32MP_SYSCON_PWR },
{ .compatible = "st,stm32mp157-syscfg",
.data = STM32MP_SYSCON_SYSCFG },
{ }