GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/drivers/mmc/uniphier-sd.c

@@ -0,0 +1,88 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2016 Socionext Inc.
+ *   Author: Masahiro Yamada <yamada.masahiro@socionext.com>
+ */
+
+#include <common.h>
+#include <clk.h>
+#include <fdtdec.h>
+#include <mmc.h>
+#include <dm.h>
+#include <linux/compat.h>
+#include <linux/dma-direction.h>
+#include <linux/io.h>
+#include <linux/sizes.h>
+#include <power/regulator.h>
+#include <asm/unaligned.h>
+
+#include "tmio-common.h"
+
+static const struct dm_mmc_ops uniphier_sd_ops = {
+	.send_cmd = tmio_sd_send_cmd,
+	.set_ios = tmio_sd_set_ios,
+	.get_cd = tmio_sd_get_cd,
+};
+
+static const struct udevice_id uniphier_sd_match[] = {
+	{ .compatible = "socionext,uniphier-sd-v2.91" },
+	{ .compatible = "socionext,uniphier-sd-v3.1" },
+	{ .compatible = "socionext,uniphier-sd-v3.1.1" },
+	{ /* sentinel */ }
+};
+
+static ulong uniphier_sd_clk_get_rate(struct tmio_sd_priv *priv)
+{
+#if CONFIG_IS_ENABLED(CLK)
+	return clk_get_rate(&priv->clk);
+#elif CONFIG_SPL_BUILD
+	return 100000000;
+#else
+	return 0;
+#endif
+}
+
+static int uniphier_sd_probe(struct udevice *dev)
+{
+	struct tmio_sd_priv *priv = dev_get_priv(dev);
+
+	priv->clk_get_rate = uniphier_sd_clk_get_rate;
+	priv->read_poll_flag = TMIO_SD_DMA_INFO1_END_RD2;
+
+#ifndef CONFIG_SPL_BUILD
+	int ret;
+
+	ret = clk_get_by_index(dev, 0, &priv->clk);
+	if (ret < 0) {
+		dev_err(dev, "failed to get host clock\n");
+		return ret;
+	}
+
+	/* set to max rate */
+	ret = clk_set_rate(&priv->clk, ULONG_MAX);
+	if (ret < 0) {
+		dev_err(dev, "failed to set rate for host clock\n");
+		clk_free(&priv->clk);
+		return ret;
+	}
+
+	ret = clk_enable(&priv->clk);
+	if (ret) {
+		dev_err(dev, "failed to enable host clock\n");
+		return ret;
+	}
+#endif
+
+	return tmio_sd_probe(dev, 0);
+}
+
+U_BOOT_DRIVER(uniphier_mmc) = {
+	.name = "uniphier-mmc",
+	.id = UCLASS_MMC,
+	.of_match = uniphier_sd_match,
+	.bind = tmio_sd_bind,
+	.probe = uniphier_sd_probe,
+	.priv_auto_alloc_size = sizeof(struct tmio_sd_priv),
+	.platdata_auto_alloc_size = sizeof(struct tmio_sd_plat),
+	.ops = &uniphier_sd_ops,
+};