Message-ID: <278a2e6e-69e0-81b0-f476-571edea950ff@quicinc.com>
Date:   Tue, 24 Jan 2023 12:49:53 +0530
MIME-Version: 1.0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101
 Thunderbird/102.4.2
Subject: Re: [PATCH 6/7] arm64: dts: Add ipq9574 SoC and AL02 board support
Content-Language: en-US
To:     Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>,
        <agross@kernel.org>, <andersson@kernel.org>,
        <konrad.dybcio@linaro.org>, <robh+dt@kernel.org>,
        <krzysztof.kozlowski+dt@linaro.org>, <mturquette@baylibre.com>,
        <sboyd@kernel.org>, <linus.walleij@linaro.org>,
        <catalin.marinas@arm.com>, <will@kernel.org>,
        <p.zabel@pengutronix.de>, <shawnguo@kernel.org>, <arnd@arndb.de>,
        <marcel.ziswiler@toradex.com>, <dmitry.baryshkov@linaro.org>,
        <nfraprado@collabora.com>, <broonie@kernel.org>,
        <tdas@codeaurora.org>, <linux-arm-msm@vger.kernel.org>,
        <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <linux-clk@vger.kernel.org>, <linux-gpio@vger.kernel.org>,
        <linux-arm-kernel@lists.infradead.org>
CC:     <quic_srichara@quicinc.com>, <quic_gokulsri@quicinc.com>,
        <quic_sjaganat@quicinc.com>, <quic_kathirav@quicinc.com>,
        <quic_arajkuma@quicinc.com>, <quic_anusha@quicinc.com>,
        <quic_poovendh@quicinc.com>
References: <20230110121316.24892-1-quic_devipriy@quicinc.com>
 <20230110121316.24892-7-quic_devipriy@quicinc.com>
 <f6ef1834-b629-b76c-9cde-55af56320665@linaro.org>
 <7f157b73-f856-04d2-1b39-e1f8861d0439@quicinc.com>
 <84aa79c3-b793-0d0e-d6a5-035aff5a17b4@linaro.org>
From:   Devi Priya <quic_devipriy@quicinc.com>
In-Reply-To: <84aa79c3-b793-0d0e-d6a5-035aff5a17b4@linaro.org>
Content-Type: text/plain; charset="UTF-8"; format=flowed
Content-Transfer-Encoding: 7bit
Precedence: bulk


On 1/13/2023 7:50 PM, Krzysztof Kozlowski wrote:
> On 13/01/2023 14:29, Devi Priya wrote:
>>>> +
>>>> +	soc: soc@0 {
>>>> +		#address-cells = <1>;
>>>> +		#size-cells = <1>;
>>>> +		ranges = <0 0 0 0xffffffff>;
>>>> +		compatible = "simple-bus";
>>>> +
>>>> +		tlmm: pinctrl@1000000 {
>>>> +			compatible = "qcom,ipq9574-tlmm";
>>>> +			reg = <0x01000000 0x300000>;
>>>> +			interrupts = <GIC_SPI 208 IRQ_TYPE_LEVEL_HIGH>;
>>>> +			gpio-controller;
>>>> +			#gpio-cells = <2>;
>>>> +			gpio-ranges = <&tlmm 0 0 65>;
>>>> +			gpio-reserved-ranges = <59 1>;
>>>
>>> Hm, why reserved ranges are in SoC?
>> As the gpio is forbidden on all ipq9574 boards, we have added it in SoC
> 
> Why it is forbidden on all boards? I guess it depends on the firmware
> and this can differ, can't it?
> 
This GPIO is protected and used by the TZ firmware and is forbidden on 
all the boards & firmware
> Best regards,
> Krzysztof
> 
Regards,
Devi Priya