aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorPeng Fan <peng.fan@nxp.com>2020-05-04 21:16:50 +0800
committerStefano Babic <sbabic@denx.de>2020-05-10 20:55:20 +0200
commit8c0a1c6de84387ad6264d4ea6fa03e2214908960 (patch)
tree47b366326f87c69cba3e06a2a4be51ecb76eb8b1
parente6405713d88eeed90c9428552dfc87bfb4b05ca0 (diff)
downloadu-boot-8c0a1c6de84387ad6264d4ea6fa03e2214908960.zip
u-boot-8c0a1c6de84387ad6264d4ea6fa03e2214908960.tar.gz
u-boot-8c0a1c6de84387ad6264d4ea6fa03e2214908960.tar.bz2
imx8: power: Add PD device lookup interface to power domain uclass
Add power_domain_lookup_name interface to power domain uclass to find a power domain device by its DTB node name, not using its associated client device. Through this interface, we can operate the power domain devices directly. This is needed for non-DM drivers. Modified from Ye's NXP downstream patch only for legacy imx8 power domain driver, since we have not migrated to use new power domain driver. Signed-off-by: Ye Li <ye.li@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com>
-rw-r--r--arch/arm/include/asm/arch-imx8/sys_proto.h7
-rw-r--r--drivers/power/domain/imx8-power-domain-legacy.c28
2 files changed, 35 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-imx8/sys_proto.h b/arch/arm/include/asm/arch-imx8/sys_proto.h
index 0e981ae..fc33e6e 100644
--- a/arch/arm/include/asm/arch-imx8/sys_proto.h
+++ b/arch/arm/include/asm/arch-imx8/sys_proto.h
@@ -5,6 +5,11 @@
#include <asm/arch/sci/sci.h>
#include <asm/mach-imx/sys_proto.h>
+#include <asm/arch/power-domain.h>
+#include <dm/platdata.h>
+#include <dm/device-internal.h>
+#include <dm/device.h>
+#include <power-domain.h>
#include <linux/types.h>
struct pass_over_info_t {
@@ -21,3 +26,5 @@ void build_info(void);
enum boot_device get_boot_device(void);
int print_bootinfo(void);
int sc_pm_setup_uart(sc_rsrc_t uart_rsrc, sc_pm_clock_rate_t clk_rate);
+int imx8_power_domain_lookup_name(const char *name,
+ struct power_domain *power_domain);
diff --git a/drivers/power/domain/imx8-power-domain-legacy.c b/drivers/power/domain/imx8-power-domain-legacy.c
index 6f01a60..2c47974 100644
--- a/drivers/power/domain/imx8-power-domain-legacy.c
+++ b/drivers/power/domain/imx8-power-domain-legacy.c
@@ -19,6 +19,34 @@ struct imx8_power_domain_priv {
bool state_on;
};
+int imx8_power_domain_lookup_name(const char *name,
+ struct power_domain *power_domain)
+{
+ struct udevice *dev;
+ struct power_domain_ops *ops;
+ int ret;
+
+ debug("%s(power_domain=%p name=%s)\n", __func__, power_domain, name);
+
+ ret = uclass_get_device_by_name(UCLASS_POWER_DOMAIN, name, &dev);
+ if (ret) {
+ printf("%s fail: %s, ret = %d\n", __func__, name, ret);
+ return ret;
+ }
+
+ ops = (struct power_domain_ops *)dev->driver->ops;
+ power_domain->dev = dev;
+ ret = ops->request(power_domain);
+ if (ret) {
+ debug("ops->request() failed: %d\n", ret);
+ return ret;
+ }
+
+ debug("%s ok: %s\n", __func__, dev->name);
+
+ return 0;
+}
+
static int imx8_power_domain_request(struct power_domain *power_domain)
{
debug("%s(power_domain=%p)\n", __func__, power_domain);