36 lines
709 B
C
36 lines
709 B
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2021, The Linux Foundation. All rights reserved.
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*/
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#ifndef __QCOM_OF_H
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#define __QCOM_OF_H
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#include <linux/of.h>
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/**
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* of_fdt_get_ddrtype - Return the type of ddr (4/5) on the current device
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*
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* On match, returns a non-zero positive value which matches the ddr type.
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* Otherwise returns -ENOENT.
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*/
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static inline int of_fdt_get_ddrtype(void)
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{
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int ret;
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u32 ddr_type;
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struct device_node *mem_node;
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mem_node = of_find_node_by_path("/memory");
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if (!mem_node)
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return -ENOENT;
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ret = of_property_read_u32(mem_node, "ddr_device_type", &ddr_type);
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of_node_put(mem_node);
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if (ret < 0)
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return -ENOENT;
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return ddr_type;
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}
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#endif
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