[PATCH 3/3] arm: dts: mt2701: Add display subsystem related nodes for MT2701
From: p.zabel@pengutronix.de (Philipp Zabel)
Date: 2017-06-09 08:22:55
Also in:
linux-devicetree, linux-mediatek, lkml
Hi Matthias, On Fri, 2017-06-09 at 10:14 +0200, Matthias Brugger wrote:
On 01/06/17 08:08, Erin Lo wrote:quoted
From: YT Shen <redacted> This patch adds the device nodes for the DISP function blocks for MT2701 Signed-off-by: YT Shen <redacted> Signed-off-by: Erin Lo <redacted> --- arch/arm/boot/dts/mt2701.dtsi | 84 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 84 insertions(+)diff --git a/arch/arm/boot/dts/mt2701.dtsi b/arch/arm/boot/dts/mt2701.dtsi index 4f110d5..e20b65c 100644 --- a/arch/arm/boot/dts/mt2701.dtsi +++ b/arch/arm/boot/dts/mt2701.dtsi@@ -17,6 +17,7 @@ #include <dt-bindings/interrupt-controller/irq.h> #include <dt-bindings/interrupt-controller/arm-gic.h> #include <dt-bindings/reset/mt2701-resets.h> +#include <dt-bindings/memory/mt2701-larb-port.h> #include "skeleton64.dtsi" #include "mt2701-pinfunc.h"@@ -24,6 +25,11 @@ compatible = "mediatek,mt2701"; interrupt-parent = <&sysirq>; + aliases { + rdma0 = &rdma0; + rdma1 = &rdma1; + }; +I know we have this alias in mt8173.dtsi, but I don't understand what they are for. Do you know?
The mtk_disp_rdma platform driver uses mtk_ddp_comp_get_id() to identify the specific RDMA instance, which calls of_alias_get_id(). The core code needs to know which RDMA is which to correctly set up the display data paths. regards Philipp