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authorRobert Marko <robimarko@gmail.com>2020-03-08 17:21:44 +0100
committerPetr Štetiar <ynezz@true.cz>2020-03-09 00:53:50 +0100
commit4ff6c434994a570dc343d5f850b19b4d4067704d (patch)
tree9f78413a77c19c1b5276fc1a8bf8142e6f9df4c8 /target/linux/ipq40xx/patches-4.19/088-v5.6-regulator-add-IPQ4019-SDHCI-VQMMC-LDO-driver.patch
parente99093c1cacaf4614d74ec038074a778d9e9fedd (diff)
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ipq40xx: add IPQ4019 SD/MMC controller support
This commit finally adds support for the built in SD/MMC controller in IPQ4019 SoC. Controller is supported by the upstream SDHCI-MSM driver with a minor clock setting patch. Patch is special to the IPQ4019 and cannot be upstreamed. LDO and SDHCI node are upstreamed, and LDO node is awaiting to be accepted. Signed-off-by: Robert Marko <robimarko@gmail.com>
Diffstat (limited to 'target/linux/ipq40xx/patches-4.19/088-v5.6-regulator-add-IPQ4019-SDHCI-VQMMC-LDO-driver.patch')
-rw-r--r--target/linux/ipq40xx/patches-4.19/088-v5.6-regulator-add-IPQ4019-SDHCI-VQMMC-LDO-driver.patch153
1 files changed, 153 insertions, 0 deletions
diff --git a/target/linux/ipq40xx/patches-4.19/088-v5.6-regulator-add-IPQ4019-SDHCI-VQMMC-LDO-driver.patch b/target/linux/ipq40xx/patches-4.19/088-v5.6-regulator-add-IPQ4019-SDHCI-VQMMC-LDO-driver.patch
new file mode 100644
index 0000000000..6b46cda941
--- /dev/null
+++ b/target/linux/ipq40xx/patches-4.19/088-v5.6-regulator-add-IPQ4019-SDHCI-VQMMC-LDO-driver.patch
@@ -0,0 +1,153 @@
+From 97043d292365ae39d62b54a6d79dff98d048b501 Mon Sep 17 00:00:00 2001
+From: Robert Marko <robert.marko@sartura.hr>
+Date: Wed, 22 Jan 2020 12:44:14 +0100
+Subject: [PATCH] From ebf652b408200504194be32ad0a3f5bb49d6000a Mon Sep 17
+ 00:00:00 2001 From: Robert Marko <robert.marko@sartura.hr> Date: Sun, 12 Jan
+ 2020 12:30:01 +0100 Subject: [PATCH] regulator: add IPQ4019 SDHCI VQMMC LDO
+ driver
+
+This introduces the IPQ4019 VQMMC LDO driver needed for
+the SD/EMMC driver I/O level operation.
+This will enable introducing SD/EMMC support for the built-in controller.
+
+Signed-off-by: Mantas Pucka <mantas@8devices.com>
+Signed-off-by: Robert Marko <robert.marko@sartura.hr>
+Link: https://lore.kernel.org/r/20200112113003.11110-1-robert.marko@sartura.hr
+Signed-off-by: Mark Brown <broonie@kernel.org>
+---
+ drivers/regulator/Kconfig | 7 ++
+ drivers/regulator/Makefile | 1 +
+ drivers/regulator/vqmmc-ipq4019-regulator.c | 101 ++++++++++++++++++++
+ 3 files changed, 109 insertions(+)
+ create mode 100644 drivers/regulator/vqmmc-ipq4019-regulator.c
+
+--- a/drivers/regulator/Kconfig
++++ b/drivers/regulator/Kconfig
+@@ -981,6 +981,13 @@ config REGULATOR_VEXPRESS
+ This driver provides support for voltage regulators available
+ on the ARM Ltd's Versatile Express platform.
+
++config REGULATOR_VQMMC_IPQ4019
++ tristate "IPQ4019 VQMMC SD LDO regulator support"
++ depends on ARCH_QCOM
++ help
++ This driver provides support for the VQMMC LDO I/0
++ voltage regulator of the IPQ4019 SD/EMMC controller.
++
+ config REGULATOR_WM831X
+ tristate "Wolfson Microelectronics WM831x PMIC regulators"
+ depends on MFD_WM831X
+--- a/drivers/regulator/Makefile
++++ b/drivers/regulator/Makefile
+@@ -122,6 +122,7 @@ obj-$(CONFIG_REGULATOR_TWL4030) += twl-r
+ obj-$(CONFIG_REGULATOR_UNIPHIER) += uniphier-regulator.o
+ obj-$(CONFIG_REGULATOR_VCTRL) += vctrl-regulator.o
+ obj-$(CONFIG_REGULATOR_VEXPRESS) += vexpress-regulator.o
++obj-$(CONFIG_REGULATOR_VQMMC_IPQ4019) += vqmmc-ipq4019-regulator.o
+ obj-$(CONFIG_REGULATOR_WM831X) += wm831x-dcdc.o
+ obj-$(CONFIG_REGULATOR_WM831X) += wm831x-isink.o
+ obj-$(CONFIG_REGULATOR_WM831X) += wm831x-ldo.o
+--- /dev/null
++++ b/drivers/regulator/vqmmc-ipq4019-regulator.c
+@@ -0,0 +1,101 @@
++// SPDX-License-Identifier: GPL-2.0+
++//
++// Copyright (c) 2019 Mantas Pucka <mantas@8devices.com>
++// Copyright (c) 2019 Robert Marko <robert.marko@sartura.hr>
++//
++// Driver for IPQ4019 SD/MMC controller's I/O LDO voltage regulator
++
++#include <linux/io.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/platform_device.h>
++#include <linux/regmap.h>
++#include <linux/regulator/driver.h>
++#include <linux/regulator/machine.h>
++#include <linux/regulator/of_regulator.h>
++
++static const unsigned int ipq4019_vmmc_voltages[] = {
++ 1500000, 1800000, 2500000, 3000000,
++};
++
++static const struct regulator_ops ipq4019_regulator_voltage_ops = {
++ .list_voltage = regulator_list_voltage_table,
++ .map_voltage = regulator_map_voltage_ascend,
++ .get_voltage_sel = regulator_get_voltage_sel_regmap,
++ .set_voltage_sel = regulator_set_voltage_sel_regmap,
++};
++
++static const struct regulator_desc vmmc_regulator = {
++ .name = "vmmcq",
++ .ops = &ipq4019_regulator_voltage_ops,
++ .type = REGULATOR_VOLTAGE,
++ .owner = THIS_MODULE,
++ .volt_table = ipq4019_vmmc_voltages,
++ .n_voltages = ARRAY_SIZE(ipq4019_vmmc_voltages),
++ .vsel_reg = 0,
++ .vsel_mask = 0x3,
++};
++
++static const struct regmap_config ipq4019_vmmcq_regmap_config = {
++ .reg_bits = 32,
++ .reg_stride = 4,
++ .val_bits = 32,
++};
++
++static int ipq4019_regulator_probe(struct platform_device *pdev)
++{
++ struct device *dev = &pdev->dev;
++ struct regulator_init_data *init_data;
++ struct regulator_config cfg = {};
++ struct regulator_dev *rdev;
++ struct resource *res;
++ struct regmap *rmap;
++ void __iomem *base;
++
++ init_data = of_get_regulator_init_data(dev, dev->of_node,
++ &vmmc_regulator);
++ if (!init_data)
++ return -EINVAL;
++
++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ base = devm_ioremap_resource(dev, res);
++ if (IS_ERR(base))
++ return PTR_ERR(base);
++
++ rmap = devm_regmap_init_mmio(dev, base, &ipq4019_vmmcq_regmap_config);
++ if (IS_ERR(rmap))
++ return PTR_ERR(rmap);
++
++ cfg.dev = dev;
++ cfg.init_data = init_data;
++ cfg.of_node = dev->of_node;
++ cfg.regmap = rmap;
++
++ rdev = devm_regulator_register(dev, &vmmc_regulator, &cfg);
++ if (IS_ERR(rdev)) {
++ dev_err(dev, "Failed to register regulator: %ld\n",
++ PTR_ERR(rdev));
++ return PTR_ERR(rdev);
++ }
++ platform_set_drvdata(pdev, rdev);
++
++ return 0;
++}
++
++static const struct of_device_id regulator_ipq4019_of_match[] = {
++ { .compatible = "qcom,vqmmc-ipq4019-regulator", },
++ {},
++};
++
++static struct platform_driver ipq4019_regulator_driver = {
++ .probe = ipq4019_regulator_probe,
++ .driver = {
++ .name = "vqmmc-ipq4019-regulator",
++ .of_match_table = of_match_ptr(regulator_ipq4019_of_match),
++ },
++};
++module_platform_driver(ipq4019_regulator_driver);
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Mantas Pucka <mantas@8devices.com>");
++MODULE_DESCRIPTION("IPQ4019 VQMMC voltage regulator");