Messages in this thread | | | Subject | Re: [PATCH 3/3] arm: dts: mt2701: Add display subsystem related nodes for MT2701 | From | Matthias Brugger <> | Date | Fri, 9 Jun 2017 12:59:25 +0200 |
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On 09/06/17 10:22, Philipp Zabel wrote: > Hi Matthias, > > On Fri, 2017-06-09 at 10:14 +0200, Matthias Brugger wrote: >> >> On 01/06/17 08:08, Erin Lo wrote: >>> From: YT Shen <yt.shen@mediatek.com> >>> >>> This patch adds the device nodes for the DISP function blocks for MT2701 >>> >>> Signed-off-by: YT Shen <yt.shen@mediatek.com> >>> Signed-off-by: Erin Lo <erin.lo@mediatek.com> >>> --- >>> 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. >
Ok, thanks for the clarification!
Matthias
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