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From: Paul Cercueil <paul@crapouillou.net>
To: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: "Rob Herring" <robh+dt@kernel.org>,
	周琰杰 <zhouyanjie@wanyeetech.com>,
	linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org,
	devicetree@vger.kernel.org, list@opendingux.net,
	"Paul Cercueil" <paul@crapouillou.net>
Subject: [PATCH 8/8] MIPS: ingenic: rs90: Add dedicated VRAM memory region
Date: Sun, 30 May 2021 18:18:02 +0100	[thread overview]
Message-ID: <20210530171802.23649-9-paul@crapouillou.net> (raw)
In-Reply-To: <20210530171802.23649-1-paul@crapouillou.net>

Add a 1 MiB memory area dedicated to the video driver. This area will be
managed by Linux' CMA, so that the ingenic-drm driver can be sure to
always be able to allocate contiguous buffers.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
---
 arch/mips/boot/dts/ingenic/rs90.dts | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/mips/boot/dts/ingenic/rs90.dts b/arch/mips/boot/dts/ingenic/rs90.dts
index 4eb1edbfc155..74fee7f01352 100644
--- a/arch/mips/boot/dts/ingenic/rs90.dts
+++ b/arch/mips/boot/dts/ingenic/rs90.dts
@@ -16,6 +16,18 @@ memory {
 		reg = <0x0 0x2000000>;
 	};
 
+	reserved-memory {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		vmem: video-memory@1f00000 {
+			compatible = "shared-dma-pool";
+			reg = <0x1f00000 0x100000>;
+			reusable;
+		};
+	};
+
 	vcc: regulator {
 		compatible = "regulator-fixed";
 
@@ -300,6 +312,8 @@ &tcu {
 };
 
 &lcd {
+	memory-region = <&vmem>;
+
 	pinctrl-names = "default";
 	pinctrl-0 = <&pins_lcd>;
 };
-- 
2.30.2


  parent reply	other threads:[~2021-05-30 17:19 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-30 17:17 [PATCH 0/8] Misc Ingenic patches Paul Cercueil
2021-05-30 17:17 ` [PATCH 1/8] MIPS: mm: XBurst CPU requires sync after DMA Paul Cercueil
2021-05-30 17:17 ` [PATCH 2/8] MIPS: boot: Support specifying UART port on Ingenic SoCs Paul Cercueil
2021-05-30 17:17 ` [PATCH 3/8] MIPS: cpu-probe: Fix FPU detection on Ingenic JZ4760(B) Paul Cercueil
2021-05-30 17:17 ` [PATCH 4/8] MIPS: Kconfig: ingenic: Ensure MACH_INGENIC_GENERIC selects all SoCs Paul Cercueil
2021-05-30 17:17 ` [PATCH 5/8] MIPS: ingenic: Select CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER Paul Cercueil
2021-05-30 17:18 ` [PATCH 6/8] MIPS: ingenic: jz4780: Fix I2C nodes to match DT doc Paul Cercueil
2021-05-30 17:18 ` [PATCH 7/8] MIPS: ingenic: gcw0: Set codec to cap-less mode for FM radio Paul Cercueil
2021-05-30 17:18 ` Paul Cercueil [this message]
2021-06-01  9:49 ` [PATCH 0/8] Misc Ingenic patches Thomas Bogendoerfer

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