Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates
 216.228.117.160 as permitted sender) receiver=protection.outlook.com;
 client-ip=216.228.117.160; helo=mail.nvidia.com; pr=C
Message-ID: <221c1bab-8f4d-9dbb-bb12-4f7ab5dc5d90@nvidia.com>
Date:   Wed, 21 Dec 2022 13:35:03 +0530
MIME-Version: 1.0
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101
 Thunderbird/102.4.2
Subject: Re: [Patch v1 01/10] memory: tegra: add interconnect support for DRAM
 scaling in Tegra234
Content-Language: en-US
To:     Dmitry Osipenko <digetx@gmail.com>, <treding@nvidia.com>,
        <krzysztof.kozlowski@linaro.org>, <dmitry.osipenko@collabora.com>,
        <viresh.kumar@linaro.org>, <rafael@kernel.org>,
        <jonathanh@nvidia.com>, <robh+dt@kernel.org>,
        <linux-kernel@vger.kernel.org>, <linux-tegra@vger.kernel.org>,
        <linux-pm@vger.kernel.org>, <devicetree@vger.kernel.org>,
        Sumit Gupta <sumitg@nvidia.com>
CC:     <sanjayc@nvidia.com>, <ksitaraman@nvidia.com>, <ishah@nvidia.com>,
        <bbasu@nvidia.com>
References: <20221220160240.27494-1-sumitg@nvidia.com>
 <20221220160240.27494-2-sumitg@nvidia.com>
 <f4e05666-d094-18cf-2641-ebf92da85dc8@gmail.com>
From:   Sumit Gupta <sumitg@nvidia.com>
In-Reply-To: <f4e05666-d094-18cf-2641-ebf92da85dc8@gmail.com>
Content-Type: text/plain; charset="UTF-8"; format=flowed
Content-Transfer-Encoding: 8bit
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Dec 2022 08:05:23.8237
 (UTC)
X-MS-Exchange-CrossTenant-Network-Message-Id: 88d3522c-46a6-40b7-f558-08dae32a1cf6
X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a
X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com]
X-MS-Exchange-CrossTenant-AuthSource: BL02EPF0000C408.namprd05.prod.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Anonymous
X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem
X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB7913
X-Spam-Status: No, score=-2.3 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH,
        DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FORGED_SPF_HELO,
        NICE_REPLY_A,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,
        SPF_NONE autolearn=ham autolearn_force=no version=3.4.6
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on
        lindbergh.monkeyblade.net
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org


On 20/12/22 23:37, Dmitry Osipenko wrote:
> External email: Use caution opening links or attachments
> 
> 
> 20.12.2022 19:02, Sumit Gupta пишет:
>> +#ifndef MEMORY_TEGRA_ICC_H
>> +#define MEMORY_TEGRA_ICC_H
>> +
>> +enum tegra_icc_client_type {
>> +     TEGRA_ICC_NONE,
>> +     TEGRA_ICC_NISO,
>> +     TEGRA_ICC_ISO_DISPLAY,
>> +     TEGRA_ICC_ISO_VI,
>> +     TEGRA_ICC_ISO_AUDIO,
>> +     TEGRA_ICC_ISO_VIFAL,
>> +};
> 
> You using only TEGRA_ICC_NISO and !TEGRA_ICC_NISO in the code.
> 
> include/soc/tegra/mc.h defines TAG_DEFAULT/ISO, please drop all these
> duplicated and unused "types" unless there is a good reason to keep them
> 

These type are used while defining clients in "tegra234_mc_clients[]" 
and its passed to BPMP-FW which has handling for each client type.

  kernel$ grep -B2 ".type = TEGRA_ICC_ISO" drivers/memory/tegra/tegra234.c
      .name = "hdar",
      .bpmp_id = TEGRA_ICC_BPMP_HDA,
      .type = TEGRA_ICC_ISO_AUDIO,
  --
      .name = "hdaw",
      .bpmp_id = TEGRA_ICC_BPMP_HDA,
      .type = TEGRA_ICC_ISO_AUDIO,
  --
      .name = "vi2w",
      .bpmp_id = TEGRA_ICC_BPMP_VI2,
      .type = TEGRA_ICC_ISO_VI,
  --
      .name = "vi2falr",
      .bpmp_id = TEGRA_ICC_BPMP_VI2FAL,
      .type = TEGRA_ICC_ISO_VIFAL,
  --
      .name = "vi2falw",
      .bpmp_id = TEGRA_ICC_BPMP_VI2FAL,
      .type = TEGRA_ICC_ISO_VIFAL,
  --
      .name = "aper",
      .bpmp_id = TEGRA_ICC_BPMP_APE,
      .type = TEGRA_ICC_ISO_AUDIO,
  --
      .name = "apew",
      .bpmp_id = TEGRA_ICC_BPMP_APE,
      .type = TEGRA_ICC_ISO_AUDIO,
  --
      .name = "nvdisplayr",
      .bpmp_id = TEGRA_ICC_BPMP_DISPLAY,
      .type = TEGRA_ICC_ISO_DISPLAY,
  --
      .name = "nvdisplayr1",
      .bpmp_id = TEGRA_ICC_BPMP_DISPLAY,
      .type = TEGRA_ICC_ISO_DISPLAY,
  --
      .name = "apedmar",
      .bpmp_id = TEGRA_ICC_BPMP_APEDMA,
      .type = TEGRA_ICC_ISO_AUDIO,
  --
      .name = "apedmaw",
      .bpmp_id = TEGRA_ICC_BPMP_APEDMA,
      .type = TEGRA_ICC_ISO_AUDIO,