1 /* 2 * Copyright (C) 2016 Socionext Inc. 3 * Author: Masahiro Yamada <yamada.masahiro@socionext.com> 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #include <common.h> 9 #include <clk.h> 10 #include <fdtdec.h> 11 #include <mmc.h> 12 #include <dm.h> 13 #include <linux/compat.h> 14 #include <linux/dma-direction.h> 15 #include <linux/io.h> 16 #include <linux/sizes.h> 17 #include <power/regulator.h> 18 #include <asm/unaligned.h> 19 20 #include "tmio-common.h" 21 22 static const struct dm_mmc_ops uniphier_sd_ops = { 23 .send_cmd = tmio_sd_send_cmd, 24 .set_ios = tmio_sd_set_ios, 25 .get_cd = tmio_sd_get_cd, 26 }; 27 28 static const struct udevice_id uniphier_sd_match[] = { 29 { .compatible = "socionext,uniphier-sdhc", .data = 0 }, 30 { /* sentinel */ } 31 }; 32 33 static int uniphier_sd_probe(struct udevice *dev) 34 { 35 struct tmio_sd_priv *priv = dev_get_priv(dev); 36 #ifndef CONFIG_SPL_BUILD 37 struct clk clk; 38 int ret; 39 40 ret = clk_get_by_index(dev, 0, &clk); 41 if (ret < 0) { 42 dev_err(dev, "failed to get host clock\n"); 43 return ret; 44 } 45 46 /* set to max rate */ 47 priv->mclk = clk_set_rate(&clk, ULONG_MAX); 48 if (IS_ERR_VALUE(priv->mclk)) { 49 dev_err(dev, "failed to set rate for host clock\n"); 50 clk_free(&clk); 51 return priv->mclk; 52 } 53 54 ret = clk_enable(&clk); 55 clk_free(&clk); 56 if (ret) { 57 dev_err(dev, "failed to enable host clock\n"); 58 return ret; 59 } 60 #else 61 priv->mclk = 100000000; 62 #endif 63 64 return tmio_sd_probe(dev, 0); 65 } 66 67 U_BOOT_DRIVER(uniphier_mmc) = { 68 .name = "uniphier-mmc", 69 .id = UCLASS_MMC, 70 .of_match = uniphier_sd_match, 71 .bind = tmio_sd_bind, 72 .probe = uniphier_sd_probe, 73 .priv_auto_alloc_size = sizeof(struct tmio_sd_priv), 74 .platdata_auto_alloc_size = sizeof(struct tmio_sd_plat), 75 .ops = &uniphier_sd_ops, 76 }; 77