linux-kernel - Re: [PATCH] arm64: dts: ti: k3-am65: Add MSMC RAM node

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Date:   Fri, 15 Feb 2019 10:46:49 +0200
From:   Tero Kristo <t-kristo@...com>
To:     Roger Quadros <rogerq@...com>
CC:     <robh+dt@...nel.org>, <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Nishanth Menon <nm@...com>, Lokesh Vutla <lokeshvutla@...com>,
        "Andrew F . Davis" <afd@...com>
Subject: Re: [PATCH] arm64: dts: ti: k3-am65: Add MSMC RAM node

On 05/02/2019 14:25, Roger Quadros wrote:
> Tero,
> 
> On 11/01/19 11:44, Roger Quadros wrote:
>> The AM65 SoC has 2MB MSMC RAM. Add this as a mmio-sram
>> node so drivers can use it via genpool API.
>>
>> Following areas are marked reserved:
>> - Lower 128KB for ATF
>> - 64KB@...0000 for SYSFW
>> - Upper 1MB for cache
>>
>> The reserved locations are subject to change at runtime by
>> the bootloader.
>>
>> Cc: Nishanth Menon <nm@...com>
>> Cc: Lokesh Vutla <lokeshvutla@...com>
>> Cc: Andrew F. Davis <afd@...com>
>> Signed-off-by: Roger Quadros <rogerq@...com>
> 
> Is this patch good to pick for -next?

Queued for 5.1, thanks.

-Tero

> 
> cheers,
> -roger
> 
>> ---
>>   arch/arm64/boot/dts/ti/k3-am65-main.dtsi | 20 ++++++++++++++++++++
>>   1 file changed, 20 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
>> index 272cf8f..5a18150 100644
>> --- a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
>> +++ b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
>> @@ -6,6 +6,26 @@
>>    */
>>   
>>   &cbass_main {
>> +	msmc_ram: sram@...00000 {
>> +		compatible = "mmio-sram";
>> +		reg = <0x0 0x70000000 0x0 0x200000>;
>> +		#address-cells = <1>;
>> +		#size-cells = <1>;
>> +		ranges = <0x0 0x0 0x70000000 0x200000>;
>> +
>> +		atf-sram@0 {
>> +			reg = <0x0 0x20000>;
>> +		};
>> +
>> +		sysfw-sram@...00 {
>> +			reg = <0xf0000 0x10000>;
>> +		};
>> +
>> +		l3cache-sram@...000 {
>> +			reg = <0x100000 0x100000>;
>> +		};
>> +	};
>> +
>>   	gic500: interrupt-controller@...0000 {
>>   		compatible = "arm,gic-v3";
>>   		#address-cells = <2>;
>>
> 

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