*/
#include <common.h>
+#ifdef CONFIG_AXP209_POWER
+#include <axp209.h>
+#endif
#include <asm/arch/clock.h>
#include <asm/arch/dram.h>
#include <asm/arch/gpio.h>
#ifdef CONFIG_SPL_BUILD
void sunxi_board_init(void)
{
+ int power_failed = 0;
unsigned long ramsize;
+#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
+
printf("DRAM:");
ramsize = sunxi_dram_init();
printf(" %lu MiB\n", ramsize >> 20);
if (!ramsize)
hang();
+
+ /*
+ * Only clock up the CPU to full speed if we are reasonably
+ * assured it's being powered with suitable core voltage
+ */
+ if (!power_failed)
+ clock_set_pll1(CONFIG_CLK_FULL_SPEED);
+ else
+ printf("Failed to set core voltage! Can't set CPU frequency\n");
}
#endif
Active arm armv7 s5pc1xx samsung smdkc100 smdkc100 - Minkyu Kang <mk7.kang@samsung.com>
Active arm armv7 socfpga altera socfpga socfpga_cyclone5 - -
Active arm armv7 sunxi - sunxi A13-OLinuXinoM sun5i:A13_OLINUXINOM,SPL,CONS_INDEX=2 Hans de Goede <hdegoede@redhat.com>
-Active arm armv7 sunxi - sunxi Cubieboard sun4i:CUBIEBOARD,SPL,SUNXI_EMAC Hans de Goede <hdegoede@redhat.com>
-Active arm armv7 sunxi - sunxi Cubietruck sun7i:CUBIETRUCK,SPL,SUNXI_GMAC,RGMII Ian Campbell <ijc@hellion.org.uk>:Hans de Goede <hdegoede@redhat.com>
-Active arm armv7 sunxi - sunxi Cubietruck_FEL sun7i:CUBIETRUCK,SPL_FEL,SUNXI_GMAC,RGMII Ian Campbell <ijc@hellion.org.uk>:Hans de Goede <hdegoede@redhat.com>
+Active arm armv7 sunxi - sunxi Cubieboard sun4i:CUBIEBOARD,SPL,AXP209_POWER,SUNXI_EMAC Hans de Goede <hdegoede@redhat.com>
+Active arm armv7 sunxi - sunxi Cubietruck sun7i:CUBIETRUCK,SPL,AXP209_POWER,SUNXI_GMAC,RGMII Ian Campbell <ijc@hellion.org.uk>:Hans de Goede <hdegoede@redhat.com>
+Active arm armv7 sunxi - sunxi Cubietruck_FEL sun7i:CUBIETRUCK,SPL_FEL,AXP209_POWER,SUNXI_GMAC,RGMII Ian Campbell <ijc@hellion.org.uk>:Hans de Goede <hdegoede@redhat.com>
Active arm armv7 sunxi - sunxi r7-tv-dongle sun5i:R7DONGLE,SPL Hans de Goede <hdegoede@redhat.com>
Active arm armv7 u8500 st-ericsson snowball snowball - Mathieu Poirier <mathieu.poirier@linaro.org>
Active arm armv7 u8500 st-ericsson u8500 u8500_href - -
--- /dev/null
+/*
+ * (C) Copyright 2012
+ * Henrik Nordstrom <henrik@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_STATUS5 = 0x4c,
+ AXP209_SHUTDOWN = 0x32,
+};
+
+#define AXP209_POWER_STATUS_ON_BY_DC (1 << 0)
+
+#define AXP209_IRQ5_PEK_UP (1 << 6)
+#define AXP209_IRQ5_PEK_DOWN (1 << 5)
+
+#define AXP209_POWEROFF (1 << 7)
+
+static int axp209_write(enum axp209_reg reg, u8 val)
+{
+ return i2c_write(0x34, reg, 1, &val, 1);
+}
+
+static int axp209_read(enum axp209_reg reg, u8 *val)
+{
+ return i2c_read(0x34, reg, 1, val, 1);
+}
+
+static u8 axp209_mvolt_to_cfg(int mvolt, int min, int max, int div)
+{
+ if (mvolt < min)
+ mvolt = min;
+ else if (mvolt > max)
+ mvolt = max;
+
+ return (mvolt - min) / div;
+}
+
+int axp209_set_dcdc2(int mvolt)
+{
+ int rc;
+ u8 cfg, current;
+
+ cfg = axp209_mvolt_to_cfg(mvolt, 700, 2275, 25);
+
+ /* 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)
+{
+ u8 cfg = axp209_mvolt_to_cfg(mvolt, 700, 3500, 25);
+
+ return axp209_write(AXP209_DCDC3_VOLTAGE, cfg);
+}
+
+int axp209_set_ldo2(int mvolt)
+{
+ int rc;
+ u8 cfg, reg;
+
+ cfg = axp209_mvolt_to_cfg(mvolt, 1800, 3300, 100);
+
+ rc = axp209_read(AXP209_LDO24_VOLTAGE, ®);
+ if (rc)
+ return rc;
+
+ /* LDO2 configuration is in upper 4 bits */
+ reg = (reg & 0x0f) | (cfg << 4);
+ return axp209_write(AXP209_LDO24_VOLTAGE, reg);
+}
+
+int axp209_set_ldo3(int mvolt)
+{
+ u8 cfg;
+
+ if (mvolt == -1)
+ cfg = 0x80; /* determined by LDO3IN pin */
+ else
+ cfg = axp209_mvolt_to_cfg(mvolt, 700, 2275, 25);
+
+ return axp209_write(AXP209_LDO3_VOLTAGE, cfg);
+}
+
+int axp209_set_ldo4(int mvolt)
+{
+ int rc;
+ static const int vindex[] = {
+ 1250, 1300, 1400, 1500, 1600, 1700, 1800, 1900, 2000, 2500,
+ 2700, 2800, 3000, 3100, 3200, 3300
+ };
+ u8 cfg, reg;
+
+ /* Translate mvolt to register cfg value, requested <= selected */
+ for (cfg = 15; vindex[cfg] > mvolt && cfg > 0; cfg--);
+
+ rc = axp209_read(AXP209_LDO24_VOLTAGE, ®);
+ if (rc)
+ return rc;
+
+ /* LDO4 configuration is in lower 4 bits */
+ reg = (reg & 0xf0) | (cfg << 0);
+ return axp209_write(AXP209_LDO24_VOLTAGE, reg);
+}
+
+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;
+}
projects / u-boot / commitdiff