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https://github.com/AsahiLinux/u-boot
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65e25bea59
In the spirit of using the same base name for all of these related macros, rename this to have the operation at the end. This is not widely used so the impact is fairly small. Signed-off-by: Simon Glass <sjg@chromium.org>
185 lines
4.1 KiB
C
185 lines
4.1 KiB
C
/*
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* NXP GPMI NAND flash driver (DT initialization)
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*
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* Copyright (C) 2018 Toradex
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* Copyright 2019 NXP
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*
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* Authors:
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* Stefan Agner <stefan.agner@toradex.com>
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*
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* Based on denali_dt.c
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <dm.h>
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#include <linux/io.h>
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#include <linux/ioport.h>
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#include <linux/printk.h>
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#include <clk.h>
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#include <mxs_nand.h>
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struct mxs_nand_dt_data {
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unsigned int max_ecc_strength_supported;
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};
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static const struct mxs_nand_dt_data mxs_nand_imx6q_data = {
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.max_ecc_strength_supported = 40,
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};
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static const struct mxs_nand_dt_data mxs_nand_imx6sx_data = {
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.max_ecc_strength_supported = 62,
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};
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static const struct mxs_nand_dt_data mxs_nand_imx7d_data = {
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.max_ecc_strength_supported = 62,
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};
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static const struct mxs_nand_dt_data mxs_nand_imx8qxp_data = {
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.max_ecc_strength_supported = 62,
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};
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static const struct udevice_id mxs_nand_dt_ids[] = {
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{
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.compatible = "fsl,imx6q-gpmi-nand",
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.data = (unsigned long)&mxs_nand_imx6q_data,
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},
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{
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.compatible = "fsl,imx6qp-gpmi-nand",
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.data = (unsigned long)&mxs_nand_imx6q_data,
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},
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{
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.compatible = "fsl,imx6sx-gpmi-nand",
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.data = (unsigned long)&mxs_nand_imx6sx_data,
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},
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{
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.compatible = "fsl,imx7d-gpmi-nand",
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.data = (unsigned long)&mxs_nand_imx7d_data,
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},
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{
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.compatible = "fsl,imx8qxp-gpmi-nand",
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.data = (unsigned long)&mxs_nand_imx8qxp_data,
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},
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{ /* sentinel */ }
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};
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static int mxs_nand_dt_probe(struct udevice *dev)
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{
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struct mxs_nand_info *info = dev_get_priv(dev);
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const struct mxs_nand_dt_data *data;
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struct resource res;
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int ret;
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data = (void *)dev_get_driver_data(dev);
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if (data)
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info->max_ecc_strength_supported = data->max_ecc_strength_supported;
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info->dev = dev;
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ret = dev_read_resource_byname(dev, "gpmi-nand", &res);
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if (ret)
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return ret;
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info->gpmi_regs = devm_ioremap(dev, res.start, resource_size(&res));
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ret = dev_read_resource_byname(dev, "bch", &res);
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if (ret)
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return ret;
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info->bch_regs = devm_ioremap(dev, res.start, resource_size(&res));
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info->use_minimum_ecc = dev_read_bool(dev, "fsl,use-minimum-ecc");
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info->legacy_bch_geometry = dev_read_bool(dev, "fsl,legacy-bch-geometry");
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if (IS_ENABLED(CONFIG_CLK) && IS_ENABLED(CONFIG_IMX8)) {
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/* Assigned clock already set clock */
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struct clk gpmi_clk;
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ret = clk_get_by_name(dev, "gpmi_io", &gpmi_clk);
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if (ret < 0) {
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debug("Can't get gpmi io clk: %d\n", ret);
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return ret;
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}
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ret = clk_enable(&gpmi_clk);
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if (ret < 0) {
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debug("Can't enable gpmi io clk: %d\n", ret);
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return ret;
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}
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ret = clk_get_by_name(dev, "gpmi_apb", &gpmi_clk);
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if (ret < 0) {
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debug("Can't get gpmi_apb clk: %d\n", ret);
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return ret;
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}
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ret = clk_enable(&gpmi_clk);
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if (ret < 0) {
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debug("Can't enable gpmi_apb clk: %d\n", ret);
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return ret;
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}
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ret = clk_get_by_name(dev, "gpmi_bch", &gpmi_clk);
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if (ret < 0) {
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debug("Can't get gpmi_bch clk: %d\n", ret);
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return ret;
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}
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ret = clk_enable(&gpmi_clk);
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if (ret < 0) {
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debug("Can't enable gpmi_bch clk: %d\n", ret);
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return ret;
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}
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ret = clk_get_by_name(dev, "gpmi_apb_bch", &gpmi_clk);
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if (ret < 0) {
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debug("Can't get gpmi_apb_bch clk: %d\n", ret);
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return ret;
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}
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ret = clk_enable(&gpmi_clk);
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if (ret < 0) {
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debug("Can't enable gpmi_apb_bch clk: %d\n", ret);
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return ret;
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}
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/* this clock is used for apbh_dma, since the apbh dma does not support DM,
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* we optionally enable it here
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*/
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ret = clk_get_by_name(dev, "gpmi_apbh_dma", &gpmi_clk);
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if (ret < 0) {
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debug("Can't get gpmi_apbh_dma clk: %d\n", ret);
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} else {
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ret = clk_enable(&gpmi_clk);
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if (ret < 0) {
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debug("Can't enable gpmi_apbh_dma clk: %d\n", ret);
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}
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}
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}
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return mxs_nand_init_ctrl(info);
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}
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U_BOOT_DRIVER(mxs_nand_dt) = {
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.name = "mxs-nand-dt",
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.id = UCLASS_MTD,
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.of_match = mxs_nand_dt_ids,
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.probe = mxs_nand_dt_probe,
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.priv_auto = sizeof(struct mxs_nand_info),
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};
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void board_nand_init(void)
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{
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struct udevice *dev;
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int ret;
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ret = uclass_get_device_by_driver(UCLASS_MTD,
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DM_DRIVER_GET(mxs_nand_dt),
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&dev);
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if (ret && ret != -ENODEV)
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pr_err("Failed to initialize MXS NAND controller. (error %d)\n",
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ret);
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}
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