From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932404AbcHILwO (ORCPT ); Tue, 9 Aug 2016 07:52:14 -0400 Received: from foss.arm.com ([217.140.101.70]:41622 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932105AbcHILwH (ORCPT ); Tue, 9 Aug 2016 07:52:07 -0400 From: Andre Przywara To: Maxime Ripard , Chen-Yu Tsai Cc: linux-sunxi@googlegroups.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Rob Herring , Mark Rutland , devicetree@vger.kernel.org Subject: [RFC PATCH 3/5] arm64: dts: sunxi: add SCPI node to sun50i-a64.dtsi Date: Tue, 9 Aug 2016 12:53:01 +0100 Message-Id: <20160809115303.17032-4-andre.przywara@arm.com> X-Mailer: git-send-email 2.9.0 In-Reply-To: <20160809115303.17032-1-andre.przywara@arm.com> References: <20160809115303.17032-1-andre.przywara@arm.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Support for variable frequency clocks is implemented in ARM Trusted Firmware, which sits in SRAM and waits for SCPI requests. Add the respective SMC mailbox node and a 512-byte chunk of SRAM to allow SCPI calls to be handled by the firmware. Signed-off-by: Andre Przywara --- arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi index 70d0382..9fc540e 100644 --- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi @@ -131,8 +131,34 @@ (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>; }; + mailbox: mbox@0 { + compatible = "arm,smc-mbox"; + #mbox-cells = <1>; + identifiers = <0x82000001>; + }; + + sram: sram@18000{ + compatible = "mmio-sram"; + reg = <0x10000 0x8000>; + + #address-cells = <1>; + #size-cells = <1>; + ranges = <0 0x10000 0x8000>; + + cpu_scp_mem: scp-shmem@7e00 { + compatible = "mmio-sram"; + reg = <0x7e00 0x200>; + }; + }; + /include/ "sun50i-a64-clocks.dtsi" + scpi { + compatible = "arm,scpi"; + mboxes = <&mailbox 0>; + shmem = <&cpu_scp_mem>; + }; + soc { compatible = "simple-bus"; #address-cells = <1>; -- 2.9.0