From: Hou Zhiqiang Zhiqiang.Hou@nxp.com
Signed-off-by: Hou Zhiqiang Zhiqiang.Hou@nxp.com --- board/freescale/common/Makefile | 1 + board/freescale/common/mc34vr500.c | 95 ++++++++++++++++++++++++++++++++++++++ include/power/mc34vr500_pmic.h | 9 ++++ 3 files changed, 105 insertions(+) create mode 100644 board/freescale/common/mc34vr500.c
diff --git a/board/freescale/common/Makefile b/board/freescale/common/Makefile index be114ce..eea9514 100644 --- a/board/freescale/common/Makefile +++ b/board/freescale/common/Makefile @@ -61,6 +61,7 @@ obj-$(CONFIG_VSC_CROSSBAR) += vsc3316_3308.o obj-$(CONFIG_IDT8T49N222A) += idt8t49n222a_serdes_clk.o obj-$(CONFIG_ZM7300) += zm7300.o obj-$(CONFIG_POWER_PFUZE100) += pfuze.o +obj-$(CONFIG_POWER_MC34VR500) += mc34vr500.o
obj-$(CONFIG_LS102XA_STREAM_ID) += ls102xa_stream_id.o
diff --git a/board/freescale/common/mc34vr500.c b/board/freescale/common/mc34vr500.c new file mode 100644 index 0000000..9c57569 --- /dev/null +++ b/board/freescale/common/mc34vr500.c @@ -0,0 +1,95 @@ +/* + * Copyright 2016 Freescale Semiconductor, Inc. + * Hou Zhiqiang Zhiqiang.Hou@freescale.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <errno.h> +#include <i2c.h> +#include <power/pmic.h> +#include <power/mc34vr500_pmic.h> + +static uint8_t swxvolt_addr[4] = { MC34VR500_SW1VOLT, + MC34VR500_SW2VOLT, + MC34VR500_SW3VOLT, + MC34VR500_SW4VOLT }; + +static uint8_t swx_set_point_base[4] = { 13, 9, 9, 9 }; + +int mc34vr500_get_sw_volt(uint8_t sw) +{ + struct pmic *p; + u32 swxvolt; + uint8_t spb; + int sw_volt; + int ret; + + debug("%s: Get SW%u volt from swxvolt_addr = 0x%x\n", + __func__, sw + 1, swxvolt_addr[sw]); + if (sw > SW4) { + printf("%s: Unsupported SW(sw%d)\n", __func__, sw + 1); + return -EINVAL; + } + + p = pmic_get("MC34VR500"); + if (!p) { + printf("%s: Did NOT find PMIC MC34VR500\n", __func__); + return -ENODEV; + } + + ret = pmic_probe(p); + if (ret) + return ret; + + ret = pmic_reg_read(p, swxvolt_addr[sw], &swxvolt); + if (ret) { + printf("%s: Failed to get SW%u volt\n", __func__, sw + 1); + return ret; + } + + debug("%s: SW%d step point swxvolt = %u\n", __func__, sw + 1, swxvolt); + spb = swx_set_point_base[sw]; + /* The base of SW volt is 625mV and increase by step 25mV */ + sw_volt = 625 + (swxvolt - spb) * 25; + + debug("%s: SW%u volt = %dmV\n", __func__, sw + 1, sw_volt); + return sw_volt; +} + +int mc34vr500_set_sw_volt(uint8_t sw, int sw_volt) +{ + struct pmic *p; + u32 swxvolt; + uint8_t spb; + int ret; + + debug("%s: Set SW%u volt to %dmV\n", __func__, sw + 1, sw_volt); + /* The least SW volt is 625mV, and only 4 SW outputs */ + if (sw > SW4 || sw_volt < 625) + return -EINVAL; + + p = pmic_get("MC34VR500"); + if (!p) { + printf("%s: Did NOT find PMIC MC34VR500\n", __func__); + return -ENODEV; + } + + ret = pmic_probe(p); + if (ret) + return ret; + + spb = swx_set_point_base[sw]; + /* The base of SW volt is 625mV and increase by step 25mV */ + swxvolt = (sw_volt - 625) / 25 + spb; + debug("%s: SW%d step point swxvolt = %u\n", __func__, sw + 1, swxvolt); + if (swxvolt > 63) + return -EINVAL; + + ret = pmic_reg_write(p, swxvolt_addr[sw], swxvolt); + if (ret) + return ret; + + return 0; +} diff --git a/include/power/mc34vr500_pmic.h b/include/power/mc34vr500_pmic.h index df4985a..b0b143a 100644 --- a/include/power/mc34vr500_pmic.h +++ b/include/power/mc34vr500_pmic.h @@ -162,5 +162,14 @@ enum { #define APS_PFM 0xc #define PWM_PFM 0xd
+enum swx { + SW1 = 0, + SW2, + SW3, + SW4, +}; + +int mc34vr500_get_sw_volt(uint8_t sw); +int mc34vr500_set_sw_volt(uint8_t sw, int sw_volt); int power_mc34vr500_init(unsigned char bus); #endif /* __MC34VR500_PMIC_H_ */