[U-Boot] [PATCH u-boot sunxi 08/12] sunxi: Add axp209 pmic support
Hans de Goede
hdegoede at redhat.com
Tue Mar 18 00:00:52 CET 2014
From: Henrik Nordstrom <henrik at henriknordstrom.net>
Based linux-sunxi#sunxi commit d854c4de2f57 "arm: Handle .gnu.hash section in
ldscripts" vs v2014.01.
As well as the following signed-off-by the sunxi branch shows commits to
the axp209.c file by:
Stefan Roese <sr at denx.de>
Signed-off-by: Henrik Nordstrom <henrik at henriknordstrom.net>
Signed-off-by: Hans de Goede <hdegoede at redhat.com>
---
board/sunxi/board.c | 26 ++++++
boards.cfg | 6 +-
drivers/power/Makefile | 1 +
drivers/power/axp209.c | 199 +++++++++++++++++++++++++++++++++++++++++
include/axp209.h | 15 ++++
include/configs/sunxi-common.h | 5 ++
6 files changed, 249 insertions(+), 3 deletions(-)
create mode 100644 drivers/power/axp209.c
create mode 100644 include/axp209.h
diff --git a/board/sunxi/board.c b/board/sunxi/board.c
index 06c9264..4b1a154 100644
--- a/board/sunxi/board.c
+++ b/board/sunxi/board.c
@@ -12,6 +12,9 @@
*/
#include <common.h>
+#ifdef CONFIG_AXP209_POWER
+#include <axp209.h>
+#endif
#include <asm/arch/clock.h>
#include <asm/arch/dram.h>
#include <asm/arch/mmc.h>
@@ -59,6 +62,7 @@ int board_mmc_init(bd_t *bis)
#ifdef CONFIG_SPL_BUILD
void sunxi_board_init(void)
{
+ int power_failed = 0;
unsigned long ramsize;
printf("DRAM:");
@@ -66,5 +70,27 @@ void sunxi_board_init(void)
printf(" %lu MiB\n", ramsize >> 20);
if (!ramsize)
hang();
+
+#ifdef CONFIG_AXP209_POWER
+ power_failed |= axp209_init();
+ power_failed |= axp209_set_dcdc2(1400);
+ power_failed |= axp209_set_dcdc3(1250);
+ power_failed |= axp209_set_ldo2(3000);
+ power_failed |= axp209_set_ldo3(2800);
+ power_failed |= axp209_set_ldo4(2800);
+#endif
+
+ /*
+ * Only clock up the CPU to full speed if we are reasonably
+ * assured it's being powered with suitable core voltage
+ */
+ if (!power_failed)
+#ifdef CONFIG_SUN7I
+ clock_set_pll1(912000000);
+#else
+ clock_set_pll1(1008000000);
+#endif
+ else
+ printf("Failed to set core voltage! Can't set CPU frequency\n");
}
#endif
diff --git a/boards.cfg b/boards.cfg
index bae0797..21395dd 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -353,10 +353,10 @@ Active arm armv7 rmobile renesas koelsch
Active arm armv7 s5pc1xx samsung goni s5p_goni - Mateusz Zalega <m.zalega at samsung.com>
Active arm armv7 s5pc1xx samsung smdkc100 smdkc100 - Minkyu Kang <mk7.kang at samsung.com>
Active arm armv7 socfpga altera socfpga socfpga_cyclone5 - -
-Active arm armv7 sunxi - sunxi A10-OLinuXino-Lime sun4i:A10_OLINUXINO_L,SPL -
+Active arm armv7 sunxi - sunxi A10-OLinuXino-Lime sun4i:A10_OLINUXINO_L,AXP209_POWER,SPL -
Active arm armv7 sunxi - sunxi A10s-OLinuXino-M sun5i:A10S_OLINUXINO_M,SPL -
-Active arm armv7 sunxi - sunxi Cubietruck sun7i:CUBIETRUCK,SPL -
-Active arm armv7 sunxi - sunxi Cubietruck_FEL sun7i:CUBIETRUCK,SPL_FEL -
+Active arm armv7 sunxi - sunxi Cubietruck sun7i:CUBIETRUCK,AXP209_POWER,SPL -
+Active arm armv7 sunxi - sunxi Cubietruck_FEL sun7i:CUBIETRUCK,AXP209_POWER,SPL_FEL -
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 53ff97d..063ac8f 100644
--- a/drivers/power/Makefile
+++ b/drivers/power/Makefile
@@ -5,6 +5,7 @@
# SPDX-License-Identifier: GPL-2.0+
#
+obj-$(CONFIG_AXP209_POWER) += axp209.o
obj-$(CONFIG_EXYNOS_TMU) += exynos-tmu.o
obj-$(CONFIG_FTPMU010_POWER) += ftpmu010.o
obj-$(CONFIG_TPS6586X_POWER) += tps6586x.o
diff --git a/drivers/power/axp209.c b/drivers/power/axp209.c
new file mode 100644
index 0000000..799e6b0
--- /dev/null
+++ b/drivers/power/axp209.c
@@ -0,0 +1,199 @@
+/*
+ * (C) Copyright 2012
+ * Henrik Nordstrom <henrik at henriknordstrom.net>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <i2c.h>
+#include <axp209.h>
+
+enum axp209_reg {
+ AXP209_POWER_STATUS = 0x00,
+ AXP209_CHIP_VERSION = 0x03,
+ AXP209_DCDC2_VOLTAGE = 0x23,
+ AXP209_DCDC3_VOLTAGE = 0x27,
+ AXP209_LDO24_VOLTAGE = 0x28,
+ AXP209_LDO3_VOLTAGE = 0x29,
+ AXP209_IRQ_STATUS3 = 0x4a,
+ AXP209_IRQ_STATUS5 = 0x4c,
+ AXP209_SHUTDOWN = 0x32,
+};
+
+#define AXP209_POWER_STATUS_ON_BY_DC (1<<0)
+
+#define AXP209_IRQ3_PEK_SHORT (1<<1)
+#define AXP209_IRQ3_PEK_LONG (1<<0)
+
+#define AXP209_IRQ5_PEK_UP (1<<6)
+#define AXP209_IRQ5_PEK_DOWN (1<<5)
+
+int axp209_write(enum axp209_reg reg, u8 val)
+{
+ return i2c_write(0x34, reg, 1, &val, 1);
+}
+
+int axp209_read(enum axp209_reg reg, u8 *val)
+{
+ return i2c_read(0x34, reg, 1, val, 1);
+}
+
+int axp209_set_dcdc2(int mvolt)
+{
+ int cfg = (mvolt - 700) / 25;
+ int rc;
+ u8 current;
+
+ if (cfg < 0)
+ cfg = 0;
+ if (cfg > (1 << 6) - 1)
+ cfg = (1 << 6) - 1;
+
+ /* Do we really need to be this gentle? It has built-in voltage slope */
+ while ((rc = axp209_read(AXP209_DCDC2_VOLTAGE, ¤t)) == 0 &&
+ current != cfg) {
+ if (current < cfg)
+ current++;
+ else
+ current--;
+
+ rc = axp209_write(AXP209_DCDC2_VOLTAGE, current);
+ if (rc)
+ break;
+ }
+
+ return rc;
+}
+
+int axp209_set_dcdc3(int mvolt)
+{
+ int cfg = (mvolt - 700) / 25;
+ u8 reg;
+ int rc;
+
+ if (cfg < 0)
+ cfg = 0;
+ if (cfg > (1 << 7) - 1)
+ cfg = (1 << 7) - 1;
+
+ rc = axp209_write(AXP209_DCDC3_VOLTAGE, cfg);
+ rc |= axp209_read(AXP209_DCDC3_VOLTAGE, ®);
+
+ return rc;
+}
+
+int axp209_set_ldo2(int mvolt)
+{
+ int cfg = (mvolt - 1800) / 100;
+ int rc;
+ u8 reg;
+
+ if (cfg < 0)
+ cfg = 0;
+ if (cfg > 15)
+ cfg = 15;
+
+ rc = axp209_read(AXP209_LDO24_VOLTAGE, ®);
+ if (rc)
+ return rc;
+
+ reg = (reg & 0x0f) | (cfg << 4);
+ rc = axp209_write(AXP209_LDO24_VOLTAGE, reg);
+ if (rc)
+ return rc;
+
+ return 0;
+}
+
+int axp209_set_ldo3(int mvolt)
+{
+ int cfg = (mvolt - 700) / 25;
+
+ if (cfg < 0)
+ cfg = 0;
+ if (cfg > 127)
+ cfg = 127;
+ if (mvolt == -1)
+ cfg = 0x80; /* detemined by LDO3IN pin */
+
+ return axp209_write(AXP209_LDO3_VOLTAGE, cfg);
+}
+
+int axp209_set_ldo4(int mvolt)
+{
+ int cfg = (mvolt - 1800) / 100;
+ int rc;
+ static const int vindex[] = {
+ 1250, 1300, 1400, 1500, 1600, 1700, 1800, 1900, 2000, 2500,
+ 2700, 2800, 3000, 3100, 3200, 3300
+ };
+ u8 reg;
+
+ /* Translate mvolt to register cfg value, requested <= selected */
+ for (cfg = 0; mvolt < vindex[cfg] && cfg < 15; cfg++);
+
+ rc = axp209_read(AXP209_LDO24_VOLTAGE, ®);
+ if (rc)
+ return rc;
+
+ /* LDO4 configuration is in lower 4 bits */
+ reg = (reg & 0xf0) | (cfg << 0);
+ rc = axp209_write(AXP209_LDO24_VOLTAGE, reg);
+ if (rc)
+ return rc;
+
+ return 0;
+}
+
+void axp209_poweroff(void)
+{
+ u8 val;
+
+ if (axp209_read(AXP209_SHUTDOWN, &val) != 0)
+ return;
+
+ val |= 1 << 7;
+
+ if (axp209_write(AXP209_SHUTDOWN, val) != 0)
+ return;
+
+ udelay(10000); /* wait for power to drain */
+}
+
+int axp209_init(void)
+{
+ u8 ver;
+ int rc;
+
+ rc = axp209_read(AXP209_CHIP_VERSION, &ver);
+ if (rc)
+ return rc;
+
+ /* Low 4 bits is chip version */
+ ver &= 0x0f;
+
+ if (ver != 0x1)
+ return -1;
+
+ return 0;
+}
+
+int axp209_poweron_by_dc(void)
+{
+ u8 v;
+
+ if (axp209_read(AXP209_POWER_STATUS, &v))
+ return 0;
+ return (v & AXP209_POWER_STATUS_ON_BY_DC);
+}
+
+int axp209_power_button(void)
+{
+ u8 v;
+
+ if (axp209_read(AXP209_IRQ_STATUS5, &v))
+ return 0;
+ axp209_write(AXP209_IRQ_STATUS5, AXP209_IRQ5_PEK_DOWN);
+ return v & AXP209_IRQ5_PEK_DOWN;
+}
diff --git a/include/axp209.h b/include/axp209.h
new file mode 100644
index 0000000..9edfa3f
--- /dev/null
+++ b/include/axp209.h
@@ -0,0 +1,15 @@
+/*
+ * (C) Copyright 2012 Henrik Nordstrom <henrik at henriknordstrom.net>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+extern int axp209_set_dcdc2(int mvolt);
+extern int axp209_set_dcdc3(int mvolt);
+extern int axp209_set_ldo2(int mvolt);
+extern int axp209_set_ldo3(int mvolt);
+extern int axp209_set_ldo4(int mvolt);
+extern void axp209_poweroff(void);
+extern int axp209_init(void);
+extern int axp209_poweron_by_dc(void);
+extern int axp209_power_button(void);
diff --git a/include/configs/sunxi-common.h b/include/configs/sunxi-common.h
index 1f2bcb5..027a1ec 100644
--- a/include/configs/sunxi-common.h
+++ b/include/configs/sunxi-common.h
@@ -184,6 +184,11 @@
#define CONFIG_SYS_I2C_SLAVE 0x7f
#define CONFIG_CMD_I2C
+/* PMU */
+#if defined CONFIG_AXP152_POWER || defined CONFIG_AXP209_POWER
+#define CONFIG_SPL_POWER_SUPPORT
+#endif
+
#ifndef CONFIG_CONS_INDEX
#define CONFIG_CONS_INDEX 1 /* UART0 */
#endif
--
1.9.0
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