On Mon, 10 Nov 2014 14:11:51 +0100 Hans de Goede hdegoede@redhat.com wrote:
From: Oliver Schinagl oliver@schinagl.nl
The A31 uses the AXP221 pmic for various voltages.
Signed-off-by: Oliver Schinagl oliver@schinagl.nl Signed-off-by: Hans de Goede hdegoede@redhat.com -- Changes in v2: -Rebase Changes in v3: -Add support for all dldo and aldo-s -Add Kconfig option to select building AXP221 and to select voltage of dldo and aldo-s Changes in v4: -Add axp221_setbits helper function
-Use symbolic names for enabled bits in CTRL1 - CTRL3 registers
[...]
diff --git a/include/axp221.h b/include/axp221.h new file mode 100644 index 0000000..e3b4409 --- /dev/null +++ b/include/axp221.h @@ -0,0 +1,50 @@ +/*
- (C) Copyright 2013 Oliver Schinagl oliver@schinagl.nl
- X-Powers AXP221 Power Management IC driver
- SPDX-License-Identifier: GPL-2.0+
- */
+#define AXP221_CHIP_ADDR 0x68 +#define AXP221_CTRL_ADDR 0x3e +#define AXP221_INIT_DATA 0x3e
+#define AXP221_CHIP_ID 0x03 +#define AXP221_OUTPUT_CTRL1 0x10 +#define AXP221_OUTPUT_CTRL1_ALDO1_EN (1 << 6) +#define AXP221_OUTPUT_CTRL1_ALDO2_EN (1 << 7) +#define AXP221_OUTPUT_CTRL2 0x12 +#define AXP221_OUTPUT_CTRL2_DLDO1_EN (1 << 3) +#define AXP221_OUTPUT_CTRL2_DLDO2_EN (1 << 4) +#define AXP221_OUTPUT_CTRL2_DLDO3_EN (1 << 5) +#define AXP221_OUTPUT_CTRL2_DLDO4_EN (1 << 6) +#define AXP221_OUTPUT_CTRL2_DCDC1_EN (1 << 7) +#define AXP221_OUTPUT_CTRL3 0x13 +#define AXP221_OUTPUT_CTRL3_ALDO3_EN (1 << 7) +#define AXP221_DLDO1_CTRL 0x15 +#define AXP221_DLDO2_CTRL 0x16 +#define AXP221_DLDO3_CTRL 0x17 +#define AXP221_DLDO4_CTRL 0x18 +#define AXP221_DCDC1_CTRL 0x21 +#define AXP221_DCDC2_CTRL 0x22 +#define AXP221_DCDC3_CTRL 0x23 +#define AXP221_DCDC4_CTRL 0x24 +#define AXP221_DCDC5_CTRL 0x25 +#define AXP221_ALDO1_CTRL 0x28 +#define AXP221_ALDO2_CTRL 0x28
The register offset of ALDO2 seems to be incorrect here (same as ALDO1): http://linux-sunxi.org/AXP221#Reg_29h:_ALDO2_output_voltage
In the current u-boot master, ALDO2 is only used by: configs/Mele_M9_defconfig:+S:CONFIG_AXP221_ALDO1_VOLT=3300
$ cat Mele_M9_defconfig CONFIG_SPL=y CONFIG_SYS_EXTRA_OPTIONS="USB_EHCI,SUNXI_GMAC" CONFIG_FDTFILE="sun6i-a31-m9.dtb" +S:CONFIG_ARM=y +S:CONFIG_ARCH_SUNXI=y +S:CONFIG_MACH_SUN6I=y +S:CONFIG_TARGET_MELE_M9=y # Ethernet phy power +S:CONFIG_AXP221_DLDO1_VOLT=3300 # USB hub power +S:CONFIG_AXP221_DLDO4_VOLT=3300 # Wifi power +S:CONFIG_AXP221_ALDO1_VOLT=3300 # HDMI power ? +S:CONFIG_AXP221_ALDO2_VOLT=1800 +S:CONFIG_AXP221_ALDO3_VOLT=3000 # Vbus gpio for usb1 +S:CONFIG_USB1_VBUS_PIN="PC27" # No Vbus gpio for usb2 +S:CONFIG_USB2_VBUS_PIN=""
It means that the code in "boards/sunxi/board.c" is likely to set 1.8V for ALDO1 instead of 3.3V:
#if CONFIG_AXP221_ALDO1_VOLT != -1 power_failed |= axp221_set_aldo1(CONFIG_AXP221_ALDO1_VOLT); #endif #if CONFIG_AXP221_ALDO2_VOLT != -1 power_failed |= axp221_set_aldo2(CONFIG_AXP221_ALDO2_VOLT); #endif
Does Wifi actually work on Mele M9? And if not, then is this something that needs to be fixed in the v2015.01 release?
Also ALDO1/ALDO2 have much heavier use in the u-boot-sunxi "next" branch.
+#define AXP221_ALDO3_CTRL 0x2a
+int axp221_set_dcdc1(unsigned int mvolt); +int axp221_set_dcdc2(unsigned int mvolt); +int axp221_set_dcdc3(unsigned int mvolt); +int axp221_set_dcdc4(unsigned int mvolt); +int axp221_set_dcdc5(unsigned int mvolt); +int axp221_set_dldo1(unsigned int mvolt); +int axp221_set_dldo2(unsigned int mvolt); +int axp221_set_dldo3(unsigned int mvolt); +int axp221_set_dldo4(unsigned int mvolt); +int axp221_set_aldo1(unsigned int mvolt); +int axp221_set_aldo2(unsigned int mvolt); +int axp221_set_aldo3(unsigned int mvolt); +int axp221_init(void);