6cca3db2bd
Add the UFS driver for MediaTek platforms. Loosely based on the Linux driver, this UFS driver can successfully get a link and R/W access to the UFS chip on the MediaTek MT6878 mobile SoC, when U-Boot is running as lk, or as the kernel (Secure world access is not tested) Signed-off-by: Igor Belwon <igor.belwon@mentallysanemainliners.org> Link: https://patch.msgid.link/20251011-mtk-ufs-uboot-v1-3-a05f991ee150@mentallysanemainliners.org Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2022 MediaTek Inc.
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* Copyright (c) 2025, Igor Belwon <igor.belwon@mentallysanemainliners.org>
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*
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* Slimmed down header from Linux: drivers/ufs/host/ufs-mediatek-sip.h
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*/
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#ifndef _UFS_MEDIATEK_SIP_H
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#define _UFS_MEDIATEK_SIP_H
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#include <linux/arm-smccc.h>
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/*
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* SiP (Slicon Partner) commands
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*/
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#define MTK_SIP_UFS_CONTROL ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
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ARM_SMCCC_SMC_64, \
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ARM_SMCCC_OWNER_SIP, 0x276)
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#define UFS_MTK_SIP_DEVICE_RESET BIT(1)
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#define UFS_MTK_SIP_REF_CLK_NOTIFICATION BIT(3)
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/*
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* SMC call wrapper function
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*/
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struct ufs_mtk_smc_arg {
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unsigned long cmd;
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struct arm_smccc_res *res;
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unsigned long v1;
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unsigned long v2;
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unsigned long v3;
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unsigned long v4;
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unsigned long v5;
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unsigned long v6;
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unsigned long v7;
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};
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static inline void _ufs_mtk_smc(struct ufs_mtk_smc_arg s)
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{
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arm_smccc_smc(MTK_SIP_UFS_CONTROL,
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s.cmd,
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s.v1, s.v2, s.v3, s.v4, s.v5, s.v6, s.res);
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}
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#define ufs_mtk_smc(...) \
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_ufs_mtk_smc((struct ufs_mtk_smc_arg) {__VA_ARGS__})
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/* SIP interface */
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#define ufs_mtk_ref_clk_notify(on, stage, res) \
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ufs_mtk_smc(UFS_MTK_SIP_REF_CLK_NOTIFICATION, &(res), on, stage)
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#define ufs_mtk_device_reset_ctrl(high, res) \
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ufs_mtk_smc(UFS_MTK_SIP_DEVICE_RESET, &(res), high)
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#endif /* !_UFS_MEDIATEK_SIP_H */
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