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74e2811361
Add auto-detection and handling of Renesas R-Car V4H-3 and V4H-5 in addition to V4H-7 SoC variants based on OTP fuse programming. The V4H-3 and V4H-5 variants have reduced DRAM frequency options. Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
81 lines
1.6 KiB
C
81 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2024 Renesas Electronics Corp.
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*/
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#include <asm/io.h>
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#include <dm.h>
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#include <dm/device-internal.h>
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#include <dm/lists.h>
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#include <errno.h>
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#include <linux/sizes.h>
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#include <ram.h>
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#include "dbsc5.h"
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static int renesas_dbsc5_probe(struct udevice *dev)
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{
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struct udevice *pdev;
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int ret;
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ret = uclass_get_device_by_name(UCLASS_RAM, "dbsc5_dram", &pdev);
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if (ret)
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return ret;
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ret = uclass_get_device_by_name(UCLASS_NOP, "dbsc5_qos", &pdev);
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if (ret)
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return ret;
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return 0;
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}
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int renesas_dbsc5_bind(struct udevice *dev)
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{
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struct udevice *ramdev, *qosdev;
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struct driver *ramdrv, *qosdrv;
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int ret;
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ramdrv = lists_driver_lookup_name("dbsc5_dram");
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if (!ramdrv)
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return -ENOENT;
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qosdrv = lists_driver_lookup_name("dbsc5_qos");
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if (!qosdrv)
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return -ENOENT;
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ret = device_bind_with_driver_data(dev, ramdrv, "dbsc5_dram",
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dev_get_driver_data(dev),
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dev_ofnode(dev), &ramdev);
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if (ret)
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return ret;
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ret = device_bind_with_driver_data(dev, qosdrv, "dbsc5_qos", 0,
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dev_ofnode(dev), &qosdev);
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if (ret)
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device_unbind(ramdev);
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return ret;
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}
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struct renesas_dbsc5_data r8a779g0_dbsc5_data = {
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.clock_node = "renesas,r8a779g0-cpg-mssr",
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.reset_node = "renesas,r8a779g0-rst",
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.otp_node = "renesas,r8a779g0-otp",
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};
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static const struct udevice_id renesas_dbsc5_ids[] = {
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{
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.compatible = "renesas,r8a779g0-dbsc",
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.data = (ulong)&r8a779g0_dbsc5_data
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},
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{ /* sentinel */ }
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};
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U_BOOT_DRIVER(renesas_dbsc5) = {
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.name = "dbsc5",
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.id = UCLASS_NOP,
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.of_match = renesas_dbsc5_ids,
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.bind = renesas_dbsc5_bind,
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.probe = renesas_dbsc5_probe,
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};
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