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Date: Fri, 2 Jan 2015 19:21:21 +0100
From: Matthias Brugger <matthias.bgg@...il.com>
To: Eddie Huang <eddie.huang@...iatek.com>
Cc: Rob Herring <robh+dt@...nel.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Pawel Moll <pawel.moll@....com>,
Mark Rutland <mark.rutland@....com>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
Kumar Gala <galak@...eaurora.org>,
Russell King <linux@....linux.org.uk>,
Jiri Slaby <jslaby@...e.cz>, Alan Cox <alan@...ux.intel.com>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
linux-serial@...r.kernel.org,
YH Chen (陳昱豪) <yh.chen@...iatek.com>,
HC Yen <hc.yen@...iatek.com>,
Nathan Chung <nathan.chung@...iatek.com>,
srv_heupstream <srv_heupstream@...iatek.com>,
Sascha Hauer <kernel@...gutronix.de>
Subject: Re: [PATCH 2/3] ARM: mediatek: add UART dts for mt8127 and mt8135
2015-01-02 11:23 GMT+01:00 Matthias Brugger <matthias.bgg@...il.com>:
> 2014-10-22 15:12 GMT+02:00 Eddie Huang <eddie.huang@...iatek.com>:
>> This add dts support for mt8127 and mt8135 SOC UART
>>
>> Signed-off-by: Eddie Huang <eddie.huang@...iatek.com>
>> ---
>> arch/arm/boot/dts/mt8127.dtsi | 34 ++++++++++++++++++++++++++++++++++
>> arch/arm/boot/dts/mt8135.dtsi | 36 ++++++++++++++++++++++++++++++++++++
>> 2 files changed, 70 insertions(+)
>>
>> diff --git a/arch/arm/boot/dts/mt8127.dtsi b/arch/arm/boot/dts/mt8127.dtsi
>> index 25c9f69..249c218 100644
>> --- a/arch/arm/boot/dts/mt8127.dtsi
>> +++ b/arch/arm/boot/dts/mt8127.dtsi
>> @@ -64,6 +64,12 @@
>> clock-frequency = <32000>;
>> #clock-cells = <0>;
>> };
>> +
>> + uart_clk: dummy26m {
>> + compatible = "fixed-clock";
>> + clock-frequency = <26000000>;
>> + #clock-cells = <0>;
>> + };
>> };
>>
>> soc {
>> @@ -89,5 +95,33 @@
>> <0 0x10214000 0 0x2000>,
>> <0 0x10216000 0 0x2000>;
>> };
>> +
>> + uart0: serial@...06000 {
>> + compatible = "mediatek,mt8127-uart","mediatek,mt6577-uart";
>> + reg = <0 0x11002000 0 0x400>;
>> + interrupts = <GIC_SPI 51 IRQ_TYPE_LEVEL_LOW>;
>> + clocks = <&uart_clk>;
>> + };
I just realized that you forgot to disable the uart ports by default
in the dtsi.
I fixed that for you, but please send a patch enabling the necessary
ports in the board dts file.
It depends on the board which uarts will be enabled rather then on the SoC.
>> +
>> + uart1: serial@...07000 {
>> + compatible = "mediatek,mt8127-uart","mediatek,mt6577-uart";
>> + reg = <0 0x11003000 0 0x400>;
>> + interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_LOW>;
>> + clocks = <&uart_clk>;
>> + };
>> +
>> + uart2: serial@...08000 {
>> + compatible = "mediatek,mt8127-uart","mediatek,mt6577-uart";
>> + reg = <0 0x11004000 0 0x400>;
>> + interrupts = <GIC_SPI 53 IRQ_TYPE_LEVEL_LOW>;
>> + clocks = <&uart_clk>;
>> + };
>> +
>> + uart3: serial@...09000 {
>> + compatible = "mediatek,mt8127-uart","mediatek,mt6577-uart";
>> + reg = <0 0x11005000 0 0x400>;
>> + interrupts = <GIC_SPI 54 IRQ_TYPE_LEVEL_LOW>;
>> + clocks = <&uart_clk>;
>> + };
>> };
>> };
>> diff --git a/arch/arm/boot/dts/mt8135.dtsi b/arch/arm/boot/dts/mt8135.dtsi
>> index 90a56ad..683b761 100644
>> --- a/arch/arm/boot/dts/mt8135.dtsi
>> +++ b/arch/arm/boot/dts/mt8135.dtsi
>> @@ -86,6 +86,13 @@
>> clock-frequency = <32000>;
>> #clock-cells = <0>;
>> };
>> +
>> + uart_clk: dummy26m {
>> + compatible = "fixed-clock";
>> + clock-frequency = <26000000>;
>> + #clock-cells = <0>;
>> + };
>> +
>> };
>>
>> soc {
>> @@ -111,5 +118,34 @@
>> <0 0x10214000 0 0x2000>,
>> <0 0x10216000 0 0x2000>;
>> };
>> +
>> + uart0: serial@...06000 {
>> + compatible = "mediatek,mt8135-uart","mediatek,mt6577-uart";
>> + reg = <0 0x11006000 0 0x400>;
>> + interrupts = <GIC_SPI 51 IRQ_TYPE_LEVEL_LOW>;
>> + clocks = <&uart_clk>;
>> + };
>> +
>> + uart1: serial@...07000 {
>> + compatible = "mediatek,mt8135-uart","mediatek,mt6577-uart";
>> + reg = <0 0x11007000 0 0x400>;
>> + interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_LOW>;
>> + clocks = <&uart_clk>;
>> + };
>> +
>> + uart2: serial@...08000 {
>> + compatible = "mediatek,mt8135-uart","mediatek,mt6577-uart";
>> + reg = <0 0x11008000 0 0x400>;
>> + interrupts = <GIC_SPI 53 IRQ_TYPE_LEVEL_LOW>;
>> + clocks = <&uart_clk>;
>> + };
>> +
>> + uart3: serial@...09000 {
>> + compatible = "mediatek,mt8135-uart","mediatek,mt6577-uart";
>> + reg = <0 0x11009000 0 0x400>;
>> + interrupts = <GIC_SPI 54 IRQ_TYPE_LEVEL_LOW>;
>> + clocks = <&uart_clk>;
>> + };
>> +
>> };
>> };
>> --
>> 1.8.1.1.dirty
>>
>
> Applied to v3.20-next/dts, thanks.
>
> --
> motzblog.wordpress.com
--
motzblog.wordpress.com
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