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https://source.denx.de/u-boot/u-boot.git
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fc2d0302b6
The size of SPL is hitting the limit (64KB) for uniphier_v7_defconfig. When booting from SD/eMMC, obviously its clock has been properly set up by the boot ROM. Acutually, no need to re-initialize the clock in SPL. Using a clock driver would generalize the SoC specific code, but solving the memory footprint problem would win. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
77 lines
1.6 KiB
C
77 lines
1.6 KiB
C
/*
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* Copyright (C) 2016 Socionext Inc.
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* Author: Masahiro Yamada <yamada.masahiro@socionext.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <clk.h>
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#include <fdtdec.h>
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#include <mmc.h>
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#include <dm.h>
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#include <linux/compat.h>
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#include <linux/dma-direction.h>
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#include <linux/io.h>
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#include <linux/sizes.h>
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#include <power/regulator.h>
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#include <asm/unaligned.h>
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#include "tmio-common.h"
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static const struct dm_mmc_ops uniphier_sd_ops = {
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.send_cmd = tmio_sd_send_cmd,
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.set_ios = tmio_sd_set_ios,
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.get_cd = tmio_sd_get_cd,
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};
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static const struct udevice_id uniphier_sd_match[] = {
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{ .compatible = "socionext,uniphier-sdhc", .data = 0 },
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{ /* sentinel */ }
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};
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static int uniphier_sd_probe(struct udevice *dev)
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{
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struct tmio_sd_priv *priv = dev_get_priv(dev);
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#ifndef CONFIG_SPL_BUILD
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struct clk clk;
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int ret;
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ret = clk_get_by_index(dev, 0, &clk);
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if (ret < 0) {
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dev_err(dev, "failed to get host clock\n");
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return ret;
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}
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/* set to max rate */
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priv->mclk = clk_set_rate(&clk, ULONG_MAX);
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if (IS_ERR_VALUE(priv->mclk)) {
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dev_err(dev, "failed to set rate for host clock\n");
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clk_free(&clk);
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return priv->mclk;
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}
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ret = clk_enable(&clk);
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clk_free(&clk);
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if (ret) {
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dev_err(dev, "failed to enable host clock\n");
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return ret;
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}
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#else
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priv->mclk = 100000000;
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#endif
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return tmio_sd_probe(dev, 0);
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}
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U_BOOT_DRIVER(uniphier_mmc) = {
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.name = "uniphier-mmc",
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.id = UCLASS_MMC,
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.of_match = uniphier_sd_match,
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.bind = tmio_sd_bind,
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.probe = uniphier_sd_probe,
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.priv_auto_alloc_size = sizeof(struct tmio_sd_priv),
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.platdata_auto_alloc_size = sizeof(struct tmio_sd_plat),
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.ops = &uniphier_sd_ops,
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};
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