[U-Boot] [PATCH 09/12] sunxi: Add axp152 pmic support
Hans de Goede
hdegoede at redhat.com
Fri May 30 11:06:09 CEST 2014
Add support for the x-powers axp152 pmic which is found on most A10s boards.
Signed-off-by: Henrik Nordstrom <henrik at henriknordstrom.net>
Signed-off-by: Ian Campbell <ijc at hellion.org.uk>
Signed-off-by: Hans de Goede <hdegoede at redhat.com>
---
board/sunxi/board.c | 10 ++++
boards.cfg | 2 +-
drivers/power/Makefile | 1 +
drivers/power/axp152.c | 122 +++++++++++++++++++++++++++++++++++++++++++++++++
include/axp152.h | 11 +++++
5 files changed, 145 insertions(+), 1 deletion(-)
create mode 100644 drivers/power/axp152.c
create mode 100644 include/axp152.h
diff --git a/board/sunxi/board.c b/board/sunxi/board.c
index 309bbd2..c6d4b3c 100644
--- a/board/sunxi/board.c
+++ b/board/sunxi/board.c
@@ -12,6 +12,9 @@
*/
#include <common.h>
+#ifdef CONFIG_AXP152_POWER
+#include <axp152.h>
+#endif
#ifdef CONFIG_AXP209_POWER
#include <axp209.h>
#endif
@@ -122,6 +125,13 @@ void sunxi_board_init(void)
int power_failed = 0;
unsigned long ramsize;
+#ifdef CONFIG_AXP152_POWER
+ power_failed = axp152_init();
+ power_failed |= axp152_set_dcdc2(1400);
+ power_failed |= axp152_set_dcdc3(1500);
+ power_failed |= axp152_set_dcdc4(1250);
+ power_failed |= axp152_set_ldo2(3000);
+#endif
#ifdef CONFIG_AXP209_POWER
power_failed |= axp209_init();
power_failed |= axp209_set_dcdc2(1400);
diff --git a/boards.cfg b/boards.cfg
index 72585a9..f4f870a 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -384,7 +384,7 @@ Active arm armv7 sunxi - sunxi
Active arm armv7 sunxi - sunxi Cubieboard sun4i:CUBIEBOARD,SPL,AXP209_POWER Hans de Goede <hdegoede at redhat.com>
Active arm armv7 sunxi - sunxi Cubietruck sun7i:CUBIETRUCK,SPL,AXP209_POWER,SUNXI_GMAC,RGMII Hans de Goede <hdegoede at redhat.com>
Active arm armv7 sunxi - sunxi Cubietruck_FEL sun7i:CUBIETRUCK,SPL_FEL,AXP209_POWER,SUNXI_GMAC,RGMII Hans de Goede <hdegoede at redhat.com>
-Active arm armv7 sunxi - sunxi r7-tv-dongle sun5i:R7DONGLE,SPL Hans de Goede <hdegoede at redhat.com>
+Active arm armv7 sunxi - sunxi r7-tv-dongle sun5i:R7DONGLE,SPL,AXP152_POWER Hans de Goede <hdegoede at redhat.com>
Active arm armv7 u8500 st-ericsson snowball snowball - Mathieu Poirier <mathieu.poirier at linaro.org>
Active arm armv7 u8500 st-ericsson u8500 u8500_href - -
Active arm armv7 vf610 freescale vf610twr vf610twr vf610twr:IMX_CONFIG=board/freescale/vf610twr/imximage.cfg Alison Wang <b18965 at freescale.com>
diff --git a/drivers/power/Makefile b/drivers/power/Makefile
index 063ac8f..dc64e4d 100644
--- a/drivers/power/Makefile
+++ b/drivers/power/Makefile
@@ -5,6 +5,7 @@
# SPDX-License-Identifier: GPL-2.0+
#
+obj-$(CONFIG_AXP152_POWER) += axp152.o
obj-$(CONFIG_AXP209_POWER) += axp209.o
obj-$(CONFIG_EXYNOS_TMU) += exynos-tmu.o
obj-$(CONFIG_FTPMU010_POWER) += ftpmu010.o
diff --git a/drivers/power/axp152.c b/drivers/power/axp152.c
new file mode 100644
index 0000000..a7a7909
--- /dev/null
+++ b/drivers/power/axp152.c
@@ -0,0 +1,122 @@
+/*
+ * (C) Copyright 2012
+ * Henrik Nordstrom <henrik at henriknordstrom.net>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+#include <common.h>
+#include <i2c.h>
+#include <axp152.h>
+
+enum axp152_reg {
+ AXP152_CHIP_VERSION = 0x3,
+ AXP152_DCDC2_VOLTAGE = 0x23,
+ AXP152_DCDC3_VOLTAGE = 0x27,
+ AXP152_DCDC4_VOLTAGE = 0x2B,
+ AXP152_LDO2_VOLTAGE = 0x2A,
+ AXP152_SHUTDOWN = 0x32,
+};
+
+int axp152_write(enum axp152_reg reg, u8 val)
+{
+ return i2c_write(0x30, reg, 1, &val, 1);
+}
+
+int axp152_read(enum axp152_reg reg, u8 *val)
+{
+ return i2c_read(0x30, reg, 1, val, 1);
+}
+
+int axp152_set_dcdc2(int mvolt)
+{
+ int target = (mvolt - 700) / 25;
+ int rc;
+ u8 current;
+
+ if (target < 0)
+ target = 0;
+ if (target > (1<<6)-1)
+ target = (1<<6)-1;
+ /* Do we really need to be this gentle? It has built-in voltage slope */
+ while ((rc = axp152_read(AXP152_DCDC2_VOLTAGE, ¤t)) == 0 &&
+ current != target) {
+ if (current < target)
+ current++;
+ else
+ current--;
+ rc = axp152_write(AXP152_DCDC2_VOLTAGE, current);
+ if (rc)
+ break;
+ }
+ return rc;
+}
+
+int axp152_set_dcdc3(int mvolt)
+{
+ int target = (mvolt - 700) / 50;
+ u8 reg;
+ int rc;
+
+ if (target < 0)
+ target = 0;
+ if (target > (1<<6)-1)
+ target = (1<<6)-1;
+ rc = axp152_write(AXP152_DCDC3_VOLTAGE, target);
+ rc |= axp152_read(AXP152_DCDC3_VOLTAGE, ®);
+ return rc;
+}
+
+int axp152_set_dcdc4(int mvolt)
+{
+ int target = (mvolt - 700) / 25;
+ u8 reg;
+ int rc;
+
+ if (target < 0)
+ target = 0;
+ if (target > (1<<7)-1)
+ target = (1<<7)-1;
+ rc = axp152_write(AXP152_DCDC4_VOLTAGE, target);
+ rc |= axp152_read(AXP152_DCDC4_VOLTAGE, ®);
+ return rc;
+}
+
+int axp152_set_ldo2(int mvolt)
+{
+ int target = (mvolt - 700) / 100;
+ int rc;
+ u8 reg;
+
+ if (target < 0)
+ target = 0;
+ if (target > 31)
+ target = 31;
+ rc = axp152_write(AXP152_LDO2_VOLTAGE, target);
+ rc |= axp152_read(AXP152_LDO2_VOLTAGE, ®);
+ return rc;
+}
+
+void axp152_poweroff(void)
+{
+ u8 val;
+
+ if (axp152_read(AXP152_SHUTDOWN, &val) != 0)
+ return;
+ val |= 1 << 7;
+ if (axp152_write(AXP152_SHUTDOWN, val) != 0)
+ return;
+ udelay(10000); /* wait for power to drain */
+}
+
+int axp152_init(void)
+{
+ u8 ver;
+ int rc;
+
+ rc = axp152_read(AXP152_CHIP_VERSION, &ver);
+ if (rc)
+ return rc;
+ if (ver != 0x05)
+ return -1;
+ return 0;
+}
diff --git a/include/axp152.h b/include/axp152.h
new file mode 100644
index 0000000..b34c194
--- /dev/null
+++ b/include/axp152.h
@@ -0,0 +1,11 @@
+/*
+ * (C) Copyright 2012 Henrik Nordstrom <henrik at henriknordstrom.net>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+int axp152_set_dcdc2(int mvolt);
+int axp152_set_dcdc3(int mvolt);
+int axp152_set_dcdc4(int mvolt);
+int axp152_set_ldo2(int mvolt);
+void axp152_poweroff(void);
+int axp152_init(void);
--
1.9.3
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