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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
80 lines
1.6 KiB
C
80 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* PMIC Error Signal Monitor driver
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*
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* Copyright (C) 2019 Texas Instruments Incorporated - https://www.ti.com/
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* Tero Kristo <t-kristo@ti.com>
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*
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*/
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#include <common.h>
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#include <dm.h>
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#include <errno.h>
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#include <power/pmic.h>
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#include <dm/device_compat.h>
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#include <linux/bitops.h>
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#define INT_ESM_REG 0x6c
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#define INT_ESM_MASK 0x3f
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#define ESM_MCU_START_REG 0x8f
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#define ESM_MCU_START BIT(0)
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#define ESM_MCU_MODE_CFG_REG 0x92
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#define ESM_MCU_EN BIT(6)
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#define ESM_MCU_ENDRV BIT(5)
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#define ESM_MCU_MASK_REG 0x59
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#define ESM_MCU_MASK 0x7
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/**
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* pmic_esm_probe: configures and enables PMIC ESM functionality
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*
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* Configures ESM PMIC support and enables it.
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*/
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static int pmic_esm_probe(struct udevice *dev)
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{
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int ret;
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ret = pmic_reg_write(dev->parent, INT_ESM_REG, INT_ESM_MASK);
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if (ret) {
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dev_err(dev, "clearing ESM irqs failed: %d\n", ret);
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return ret;
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}
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ret = pmic_reg_write(dev->parent, ESM_MCU_MODE_CFG_REG,
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ESM_MCU_EN | ESM_MCU_ENDRV);
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if (ret) {
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dev_err(dev, "setting ESM mode failed: %d\n", ret);
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return ret;
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}
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ret = pmic_reg_write(dev->parent, ESM_MCU_MASK_REG, ESM_MCU_MASK);
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if (ret) {
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dev_err(dev, "clearing ESM masks failed: %d\n", ret);
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return ret;
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}
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ret = pmic_reg_write(dev->parent, ESM_MCU_START_REG, ESM_MCU_START);
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if (ret) {
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dev_err(dev, "starting ESM failed: %d\n", ret);
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return ret;
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}
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return 0;
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}
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static const struct udevice_id pmic_esm_ids[] = {
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{ .compatible = "ti,tps659413-esm" },
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{}
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};
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U_BOOT_DRIVER(pmic_esm) = {
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.name = "esm_pmic",
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.of_match = pmic_esm_ids,
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.id = UCLASS_MISC,
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.probe = pmic_esm_probe,
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};
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