linux-kernel - [RFC V2 05/11] soc: mediatek: add header for mediatek SIP interface

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Message-ID: <1556614265-12745-6-git-send-email-henryc.chen@mediatek.com>
Date:   Tue, 30 Apr 2019 16:50:59 +0800
From:   Henry Chen <henryc.chen@...iatek.com>
To:     Georgi Djakov <georgi.djakov@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Viresh Kumar <vireshk@...nel.org>,
        Stephen Boyd <swboyd@...omium.org>
CC:     Nicolas Boichat <drinkcat@...gle.com>,
        Fan Chen <fan.chen@...iatek.com>,
        James Liao <jamesjj.liao@...iatek.com>,
        Weiyi Lu <weiyi.lu@...iatek.com>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        "Henry Chen" <henryc.chen@...iatek.com>
Subject: [RFC V2 05/11] soc: mediatek: add header for mediatek SIP interface

Add a header to collect SIPs and add one SIP call to initialize power
management hardware for the SIP interface defined to access the SPM
handling vcore voltage and ddr rate changes on mt8183 (and most likely
later socs).

Signed-off-by: Henry Chen <henryc.chen@...iatek.com>
---
 include/soc/mediatek/mtk_sip.h | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 include/soc/mediatek/mtk_sip.h

diff --git a/include/soc/mediatek/mtk_sip.h b/include/soc/mediatek/mtk_sip.h
new file mode 100644
index 0000000..5394ff4
--- /dev/null
+++ b/include/soc/mediatek/mtk_sip.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * Copyright (c) 2018 MediaTek Inc.
+ */
+#ifndef __SOC_MTK_SIP_H
+#define __SOC_MTK_SIP_H
+
+#ifdef CONFIG_ARM64
+#define MTK_SIP_SMC_AARCH_BIT		0x40000000
+#else
+#define MTK_SIP_SMC_AARCH_BIT		0x00000000
+#endif
+
+#define MTK_SIP_SPM			(0x82000220 | MTK_SIP_SMC_AARCH_BIT)
+#define MTK_SIP_SPM_DVFSRC_INIT		0x00
+
+#endif
-- 
1.9.1