1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (C) 2016 Socionext Inc. 4 * Author: Masahiro Yamada <yamada.masahiro@socionext.com> 5 */ 6 7 #include <common.h> 8 #include <clk.h> 9 #include <fdtdec.h> 10 #include <mmc.h> 11 #include <dm.h> 12 #include <linux/compat.h> 13 #include <linux/dma-direction.h> 14 #include <linux/io.h> 15 #include <linux/sizes.h> 16 #include <power/regulator.h> 17 #include <asm/unaligned.h> 18 19 #include "tmio-common.h" 20 21 static const struct dm_mmc_ops uniphier_sd_ops = { 22 .send_cmd = tmio_sd_send_cmd, 23 .set_ios = tmio_sd_set_ios, 24 .get_cd = tmio_sd_get_cd, 25 }; 26 27 static const struct udevice_id uniphier_sd_match[] = { 28 { .compatible = "socionext,uniphier-sd-v2.91" }, 29 { .compatible = "socionext,uniphier-sd-v3.1" }, 30 { .compatible = "socionext,uniphier-sd-v3.1.1" }, 31 { /* sentinel */ } 32 }; 33 34 static ulong uniphier_sd_clk_get_rate(struct tmio_sd_priv *priv) 35 { 36 #if CONFIG_IS_ENABLED(CLK) 37 return clk_get_rate(&priv->clk); 38 #elif CONFIG_SPL_BUILD 39 return 100000000; 40 #else 41 return 0; 42 #endif 43 } 44 45 static int uniphier_sd_probe(struct udevice *dev) 46 { 47 struct tmio_sd_priv *priv = dev_get_priv(dev); 48 49 priv->clk_get_rate = uniphier_sd_clk_get_rate; 50 51 #ifndef CONFIG_SPL_BUILD 52 int ret; 53 54 ret = clk_get_by_index(dev, 0, &priv->clk); 55 if (ret < 0) { 56 dev_err(dev, "failed to get host clock\n"); 57 return ret; 58 } 59 60 /* set to max rate */ 61 ret = clk_set_rate(&priv->clk, ULONG_MAX); 62 if (ret < 0) { 63 dev_err(dev, "failed to set rate for host clock\n"); 64 clk_free(&priv->clk); 65 return ret; 66 } 67 68 ret = clk_enable(&priv->clk); 69 if (ret) { 70 dev_err(dev, "failed to enable host clock\n"); 71 return ret; 72 } 73 #endif 74 75 return tmio_sd_probe(dev, 0); 76 } 77 78 U_BOOT_DRIVER(uniphier_mmc) = { 79 .name = "uniphier-mmc", 80 .id = UCLASS_MMC, 81 .of_match = uniphier_sd_match, 82 .bind = tmio_sd_bind, 83 .probe = uniphier_sd_probe, 84 .priv_auto_alloc_size = sizeof(struct tmio_sd_priv), 85 .platdata_auto_alloc_size = sizeof(struct tmio_sd_plat), 86 .ops = &uniphier_sd_ops, 87 }; 88