From 9d233b4e3ed675561c4e3bd904e0a314f20dbe82 Mon Sep 17 00:00:00 2001 From: Tero Kristo Date: Thu, 24 Oct 2019 15:00:46 +0530 Subject: misc: k3_avs: add driver for K3 Adaptive Voltage Scaling Class 0 Adaptive Voltage Scaling is a technology used in TI SoCs to optimize the operating voltage based on characterization data written to efuse during production. Add a driver to support this feature for K3 line of SoCs, initially for AM65x. Signed-off-by: Tero Kristo Signed-off-by: Keerthy --- include/k3-avs.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 include/k3-avs.h (limited to 'include') diff --git a/include/k3-avs.h b/include/k3-avs.h new file mode 100644 index 00000000000..98674816179 --- /dev/null +++ b/include/k3-avs.h @@ -0,0 +1,28 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Texas Instruments' K3 Adaptive Voltage Scaling driver + * + * Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com/ + * Tero Kristo + * + */ + +#ifndef _K3_AVS0_ +#define _K3_AVS0_ + +#define AM6_VDD_WKUP 0 +#define AM6_VDD_MCU 1 +#define AM6_VDD_CORE 2 +#define AM6_VDD_MPU0 3 +#define AM6_VDD_MPU1 4 + +#define NUM_OPPS 4 + +#define AM6_OPP_NOM 1 +#define AM6_OPP_OD 2 +#define AM6_OPP_TURBO 3 + +int k3_avs_set_opp(struct udevice *dev, int vdd_id, int opp_id); +int k3_avs_notify_freq(int dev_id, int clk_id, u32 freq); + +#endif -- cgit v1.3.1 From 9a03e50c5fad1daff7335dafa5b8b7e2a66ce6c9 Mon Sep 17 00:00:00 2001 From: Keerthy Date: Thu, 24 Oct 2019 15:00:49 +0530 Subject: misc: k3_avs: Add j721e support j721e SoCs have different OPP tables. Add support for the same. Note: DM Still has lot of voltages TBD hence the correct values need to be programmed once they are published. Signed-off-by: Keerthy --- drivers/misc/k3_avs.c | 22 ++++++++++++++++++++++ include/k3-avs.h | 2 ++ 2 files changed, 24 insertions(+) (limited to 'include') diff --git a/drivers/misc/k3_avs.c b/drivers/misc/k3_avs.c index dd7fc3d5853..c19c3c0646b 100644 --- a/drivers/misc/k3_avs.c +++ b/drivers/misc/k3_avs.c @@ -347,6 +347,27 @@ static struct vd_data am654_vd_data[] = { { .id = -1 }, }; +static struct vd_data j721e_vd_data[] = { + { + .id = J721E_VDD_MPU, + .opp = AM6_OPP_NOM, + .dev_id = 202, /* J721E_DEV_A72SS0_CORE0 */ + .clk_id = 2, /* ARM clock */ + .opps = { + [AM6_OPP_NOM] = { + .volt = 880000, /* TBD in DM */ + .freq = 2000000000, + }, + }, + }, + { .id = -1 }, +}; + +static struct vd_config j721e_vd_config = { + .efuse_xlate = am6_efuse_xlate, + .vds = j721e_vd_data, +}; + static struct vd_config am654_vd_config = { .efuse_xlate = am6_efuse_xlate, .vds = am654_vd_data, @@ -354,6 +375,7 @@ static struct vd_config am654_vd_config = { static const struct udevice_id k3_avs_ids[] = { { .compatible = "ti,am654-avs", .data = (ulong)&am654_vd_config }, + { .compatible = "ti,j721e-avs", .data = (ulong)&j721e_vd_config }, {} }; diff --git a/include/k3-avs.h b/include/k3-avs.h index 98674816179..e3c3cafbb9d 100644 --- a/include/k3-avs.h +++ b/include/k3-avs.h @@ -16,6 +16,8 @@ #define AM6_VDD_MPU0 3 #define AM6_VDD_MPU1 4 +#define J721E_VDD_MPU 2 + #define NUM_OPPS 4 #define AM6_OPP_NOM 1 -- cgit v1.3.1 From 6b86dd0c1eadab4382c394d2c17379f5c762f210 Mon Sep 17 00:00:00 2001 From: Keerthy Date: Thu, 24 Oct 2019 15:00:50 +0530 Subject: power: pmic: tps65941: Add support for tps65941 family of PMICs Add support to bind the regulators/child nodes with the pmic. Signed-off-by: Keerthy --- drivers/power/pmic/Kconfig | 7 ++++ drivers/power/pmic/Makefile | 1 + drivers/power/pmic/tps65941.c | 83 +++++++++++++++++++++++++++++++++++++++++++ include/power/tps65941.h | 26 ++++++++++++++ 4 files changed, 117 insertions(+) create mode 100644 drivers/power/pmic/tps65941.c create mode 100644 include/power/tps65941.h (limited to 'include') diff --git a/drivers/power/pmic/Kconfig b/drivers/power/pmic/Kconfig index 4718dc700cd..b4bf0186746 100644 --- a/drivers/power/pmic/Kconfig +++ b/drivers/power/pmic/Kconfig @@ -275,3 +275,10 @@ config SPL_PMIC_LP87565 help The LP87565 is a PMIC containing a bunch of SMPS. This driver binds the pmic children in SPL. + +config PMIC_TPS65941 + bool "Enable driver for Texas Instruments TPS65941 PMIC" + depends on DM_PMIC + help + The TPS65941 is a PMIC containing a bunch of SMPS & LDOs. + This driver binds the pmic children. diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile index 888dbb28573..ec643278056 100644 --- a/drivers/power/pmic/Makefile +++ b/drivers/power/pmic/Makefile @@ -39,3 +39,4 @@ obj-$(CONFIG_POWER_TPS65218) += pmic_tps65218.o obj-$(CONFIG_POWER_TPS65910) += pmic_tps65910.o obj-$(CONFIG_POWER_HI6553) += pmic_hi6553.o obj-$(CONFIG_POWER_MC34VR500) += pmic_mc34vr500.o +obj-$(CONFIG_PMIC_TPS65941) += tps65941.o diff --git a/drivers/power/pmic/tps65941.c b/drivers/power/pmic/tps65941.c new file mode 100644 index 00000000000..e8f3c950bd7 --- /dev/null +++ b/drivers/power/pmic/tps65941.c @@ -0,0 +1,83 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2019 Texas Instruments Incorporated, + * Keerthy + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static const struct pmic_child_info pmic_children_info[] = { + { .prefix = "ldo", .driver = TPS65941_LDO_DRIVER }, + { .prefix = "buck", .driver = TPS65941_BUCK_DRIVER }, + { }, +}; + +static int tps65941_write(struct udevice *dev, uint reg, const uint8_t *buff, + int len) +{ + if (dm_i2c_write(dev, reg, buff, len)) { + pr_err("write error to device: %p register: %#x!\n", dev, reg); + return -EIO; + } + + return 0; +} + +static int tps65941_read(struct udevice *dev, uint reg, uint8_t *buff, int len) +{ + if (dm_i2c_read(dev, reg, buff, len)) { + pr_err("read error from device: %p register: %#x!\n", dev, reg); + return -EIO; + } + + return 0; +} + +static int tps65941_bind(struct udevice *dev) +{ + ofnode regulators_node; + int children; + + regulators_node = dev_read_subnode(dev, "regulators"); + if (!ofnode_valid(regulators_node)) { + debug("%s: %s regulators subnode not found!\n", __func__, + dev->name); + return -ENXIO; + } + + debug("%s: '%s' - found regulators subnode\n", __func__, dev->name); + + children = pmic_bind_children(dev, regulators_node, pmic_children_info); + if (!children) + printf("%s: %s - no child found\n", __func__, dev->name); + + /* Always return success for this device */ + return 0; +} + +static struct dm_pmic_ops tps65941_ops = { + .read = tps65941_read, + .write = tps65941_write, +}; + +static const struct udevice_id tps65941_ids[] = { + { .compatible = "ti,tps659411", .data = TPS659411 }, + { .compatible = "ti,tps659413", .data = TPS659413 }, + { } +}; + +U_BOOT_DRIVER(pmic_tps65941) = { + .name = "tps65941_pmic", + .id = UCLASS_PMIC, + .of_match = tps65941_ids, + .bind = tps65941_bind, + .ops = &tps65941_ops, +}; diff --git a/include/power/tps65941.h b/include/power/tps65941.h new file mode 100644 index 00000000000..2d48b31ae35 --- /dev/null +++ b/include/power/tps65941.h @@ -0,0 +1,26 @@ +#define TPS659411 0x0 +#define TPS659412 0x1 +#define TPS659413 0x2 +#define TPS659414 0x3 + +/* I2C device address for pmic tps65941 */ +#define TPS65941_I2C_ADDR (0x12 >> 1) +#define TPS65941_LDO_NUM 4 +#define TPS65941_BUCK_NUM 5 + +/* Drivers name */ +#define TPS65941_LDO_DRIVER "tps65941_ldo" +#define TPS65941_BUCK_DRIVER "tps65941_buck" + +#define TPS65941_BUCK_VOLT_MASK 0xFF +#define TPS65941_BUCK_VOLT_MAX_HEX 0xFF +#define TPS65941_BUCK_VOLT_MAX 3340000 +#define TPS65941_BUCK_MODE_MASK 0x1 + +#define TPS65941_LDO_VOLT_MASK 0x3E +#define TPS65941_LDO_VOLT_MAX_HEX 0x3A +#define TPS65941_LDO_VOLT_MIN_HEX 0x4 +#define TPS65941_LDO_VOLT_MAX 3300000 +#define TPS65941_LDO_MODE_MASK 0x1 +#define TPS65941_LDO_BYPASS_EN 0x80 +#define TP65941_BUCK_CONF_SLEW_MASK 0x7 -- cgit v1.3.1