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From: Richard Zhu <hongxing.zhu@nxp.com>
To: "shawnguo@kernel.org" <shawnguo@kernel.org>,
	"s.hauer@pengutronix.de" <s.hauer@pengutronix.de>,
	"kernel@pengutronix.de" <kernel@pengutronix.de>,
	"festevam@gmail.com" <festevam@gmail.com>,
	dl-linux-imx <linux-imx@nxp.com>,
	Richard Zhu <hongxing.zhu@nxp.com>
Cc: "linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>
Subject: [RFC 2/2] arm64: dts: imx8qxp: add the rpmsg support
Date: Thu, 4 Jul 2019 06:36:15 +0000	[thread overview]
Message-ID: <1562220905-13875-3-git-send-email-hongxing.zhu@nxp.com> (raw)
In-Reply-To: <1562220905-13875-1-git-send-email-hongxing.zhu@nxp.com>

Add the rpmsg support.
- Setup the rpmsg reserved memory, one is used for vring, the other one
is used for shared buffers.
- The mailbox of the lsio mu5a is used by rpmsg on imx8qxp platforms.

Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
---
 arch/arm64/boot/dts/freescale/imx8qxp-mek.dts | 36 +++++++++++++++++++++++++++
 arch/arm64/boot/dts/freescale/imx8qxp.dtsi    | 23 +++++++++++++++++
 2 files changed, 59 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8qxp-mek.dts b/arch/arm64/boot/dts/freescale/imx8qxp-mek.dts
index bfdada2..83cf611b 100644
--- a/arch/arm64/boot/dts/freescale/imx8qxp-mek.dts
+++ b/arch/arm64/boot/dts/freescale/imx8qxp-mek.dts
@@ -20,6 +20,32 @@
 		reg = <0x00000000 0x80000000 0 0x40000000>;
 	};
 
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		/*
+		 * 0x8800_0000 ~ 0x8FFF_FFFF is reserved for M4
+		 * Shouldn't be used at A core and Linux side.
+		 *
+		 */
+		m4_reserved: m4@0x88000000 {
+			no-map;
+			reg = <0 0x88000000 0 0x8000000>;
+		};
+
+		rpmsg_reserved: rpmsg@0x90000000 {
+			no-map;
+			reg = <0 0x90000000 0 0x400000>;
+		};
+		rpmsg_dma_reserved:rpmsg_dma@0x90400000 {
+			compatible = "shared-dma-pool";
+			no-map;
+			reg = <0 0x90400000 0 0x100000>;
+		};
+	};
+
 	reg_usdhc2_vmmc: usdhc2-vmmc {
 		compatible = "regulator-fixed";
 		regulator-name = "SD1_SPWR";
@@ -136,6 +162,16 @@
 	};
 };
 
+&rpmsg{
+	/*
+	 * 64K for one rpmsg instance:
+	 */
+	vdev-nums = <2>;
+	reg = <0x0 0x90000000 0x0 0x20000>;
+	memory-region = <&rpmsg_dma_reserved>;
+	status = "okay";
+};
+
 &usdhc1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_usdhc1>;
diff --git a/arch/arm64/boot/dts/freescale/imx8qxp.dtsi b/arch/arm64/boot/dts/freescale/imx8qxp.dtsi
index 05fa0b7..e211fff 100644
--- a/arch/arm64/boot/dts/freescale/imx8qxp.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8qxp.dtsi
@@ -544,6 +544,14 @@
 			status = "disabled";
 		};
 
+		lsio_mu5: mailbox@5d200000 {
+			compatible = "fsl,imx8qxp-mu", "fsl,imx6sx-mu";
+			reg = <0x5d200000 0x10000>;
+			interrupts = <GIC_SPI 184 IRQ_TYPE_LEVEL_HIGH>;
+			#mbox-cells = <2>;
+			power-domains = <&pd IMX_SC_R_MU_5A>;
+		};
+
 		lsio_mu13: mailbox@5d280000 {
 			compatible = "fsl,imx8qxp-mu", "fsl,imx6sx-mu";
 			reg = <0x5d280000 0x10000>;
@@ -558,4 +566,19 @@
 			#clock-cells = <1>;
 		};
 	};
+
+	rpmsg: rpmsg{
+		compatible = "fsl,imx8qxp-rpmsg";
+		/* up to now, the following channels are used in imx rpmsg
+		 * - tx1/rx1: messages channel.
+		 * - general interrupt1: remote proc finish re-init rpmsg stack
+		 *   when A core is partition reset.
+		 */
+		mbox-names = "tx", "rx", "rxdb";
+		mboxes = <&lsio_mu5 0 1
+			  &lsio_mu5 1 1
+			  &lsio_mu5 3 1>;
+		mub-partition = <3>;
+		status = "disabled";
+	};
 };
-- 
2.7.4


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      parent reply	other threads:[~2019-07-04  6:37 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-04  6:36 [RFC 0/2] arm64: dts: add the rpmsg support on imx8mq and imx8qxp Richard Zhu
2019-07-04  6:36 ` [RFC 1/2] arm64: dts: imx8mq: add the rpmsg support Richard Zhu
2019-07-04  9:17   ` Oleksij Rempel
2019-07-04  9:33     ` [EXT] " Richard Zhu
2019-07-04  6:36 ` Richard Zhu [this message]

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