From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f50.google.com (mail-wm1-f50.google.com [209.85.128.50]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BDFBC8F52 for ; Sat, 30 Dec 2023 14:22:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linaro.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="gi+bZ1Ws" Received: by mail-wm1-f50.google.com with SMTP id 5b1f17b1804b1-40d5ac76667so29818895e9.1 for ; Sat, 30 Dec 2023 06:22:02 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1703946121; x=1704550921; darn=vger.kernel.org; h=content-transfer-encoding:in-reply-to:autocrypt:from:references:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=QWcrHQUcAcYaLbM7fZ2AepXLu2WNUV5dOqY0bUDUUrg=; b=gi+bZ1WsvWP8GiG51CagVZoGuTVi94M4chol1UXwfV7+7otEbksyYZBSauJu2dJyML ELMjd3G1AHnA0vRXSjY4FPPVFZKppH22JF9/95YmhKmtF7zN08ySOrQhG2tepaaf6Qii Yt6C/150X1U0BEH+1l68b4V4CZTe7EDp24Nazlra9xdT/Xr3NmnnQMtOuAwtvDp5QgVJ B0tJhiIds2bf6JBzolixr/tLqp7JxxFQgcU+y7+Uru8TInsQ56VTozfUiE6yCUA3H54Z kZ54St+EZb6OoxSbADc8aLvYwS/Qmyl42HAQhLsL5xGRN0jugF5J3jDO6v9Z1Xt52usw J2mA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1703946121; x=1704550921; h=content-transfer-encoding:in-reply-to:autocrypt:from:references:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=QWcrHQUcAcYaLbM7fZ2AepXLu2WNUV5dOqY0bUDUUrg=; b=nbbtujAKF1R1W/3biXZGZUjk5Ldq2/jUvyPJLSA/hGSIF7a/a14qj2yY9S3GsRm+i6 jpCPA6LH2gSMYEC4PK866h8obZNmOTFYsdo4hzDu+wlzr9DE+9N7b7MEAHgCewHu3OQj Pitn0jbp4KsvbIYWAJeWS5hokJ7CtLUv+rQFYux3LgzJFKv2Fmjy9iDS+bIaMDBPzaw0 sKCQ2UkHYa5VaSK7wQNMPZRCgjd8QX+FcPVzspz4faoAFDpXZmeQrG3wjIae4LrpaWuD 1MYf8QS3fioHVTNbNx2vmfwYutPDizjGv0KrI0FHjJdDZZumEaBxtkacpiM+Czg4plkm 0Tcg== X-Gm-Message-State: AOJu0YztBawHX+wSYR947tWOBzUMcRtV5zs62+AS0tpsinIiGBlzD50u PWb4O8i48bbXLUvUsfvNAytA0eao0Q0/DQ== X-Google-Smtp-Source: AGHT+IFooxihoErjBcxLzzB6fg0RiaonXP2L4PWQ2qTT5vu04+b8n42IQiCcek3m6uSme6GFNwFzCw== X-Received: by 2002:a05:600c:3ac6:b0:40d:7d83:d98f with SMTP id d6-20020a05600c3ac600b0040d7d83d98fmr1057772wms.94.1703946121011; Sat, 30 Dec 2023 06:22:01 -0800 (PST) Received: from [192.168.1.20] ([178.197.218.27]) by smtp.gmail.com with ESMTPSA id n2-20020a05600c3b8200b0040d5ab35657sm15783233wms.4.2023.12.30.06.21.58 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 30 Dec 2023 06:22:00 -0800 (PST) Message-ID: <09b7b9c9-a746-44e1-b504-c684d2e0eeaa@linaro.org> Date: Sat, 30 Dec 2023 15:21:58 +0100 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 1/5] dt-bindings: crypto: Add Tegra Security Engine Content-Language: en-US To: Akhil R , "herbert@gondor.apana.org.au" , "davem@davemloft.net" , "robh+dt@kernel.org" , "krzysztof.kozlowski+dt@linaro.org" , "conor+dt@kernel.org" , "thierry.reding@gmail.com" , Jonathan Hunter , "catalin.marinas@arm.com" , "will@kernel.org" , Mikko Perttunen , "linux-crypto@vger.kernel.org" , "devicetree@vger.kernel.org" , "linux-tegra@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "krzk@kernel.org" References: <20231219125614.33062-1-akhilrajeev@nvidia.com> <20231219125614.33062-2-akhilrajeev@nvidia.com> <662833e4-fd2a-481c-9d40-5e691d9a0cfa@linaro.org> From: Krzysztof Kozlowski Autocrypt: addr=krzysztof.kozlowski@linaro.org; keydata= xsFNBFVDQq4BEAC6KeLOfFsAvFMBsrCrJ2bCalhPv5+KQF2PS2+iwZI8BpRZoV+Bd5kWvN79 cFgcqTTuNHjAvxtUG8pQgGTHAObYs6xeYJtjUH0ZX6ndJ33FJYf5V3yXqqjcZ30FgHzJCFUu JMp7PSyMPzpUXfU12yfcRYVEMQrmplNZssmYhiTeVicuOOypWugZKVLGNm0IweVCaZ/DJDIH gNbpvVwjcKYrx85m9cBVEBUGaQP6AT7qlVCkrf50v8bofSIyVa2xmubbAwwFA1oxoOusjPIE J3iadrwpFvsZjF5uHAKS+7wHLoW9hVzOnLbX6ajk5Hf8Pb1m+VH/E8bPBNNYKkfTtypTDUCj NYcd27tjnXfG+SDs/EXNUAIRefCyvaRG7oRYF3Ec+2RgQDRnmmjCjoQNbFrJvJkFHlPeHaeS BosGY+XWKydnmsfY7SSnjAzLUGAFhLd/XDVpb1Een2XucPpKvt9ORF+48gy12FA5GduRLhQU vK4tU7ojoem/G23PcowM1CwPurC8sAVsQb9KmwTGh7rVz3ks3w/zfGBy3+WmLg++C2Wct6nM Pd8/6CBVjEWqD06/RjI2AnjIq5fSEH/BIfXXfC68nMp9BZoy3So4ZsbOlBmtAPvMYX6U8VwD TNeBxJu5Ex0Izf1NV9CzC3nNaFUYOY8KfN01X5SExAoVTr09ewARAQABzTRLcnp5c3p0b2Yg S296bG93c2tpIDxrcnp5c3p0b2Yua296bG93c2tpQGxpbmFyby5vcmc+wsGUBBMBCgA+FiEE m9B+DgxR+NWWd7dUG5NDfTtBYpsFAmI+BxMCGwMFCRRfreEFCwkIBwIGFQoJCAsCBBYCAwEC HgECF4AACgkQG5NDfTtBYptgbhAAjAGunRoOTduBeC7V6GGOQMYIT5n3OuDSzG1oZyM4kyvO XeodvvYv49/ng473E8ZFhXfrre+c1olbr1A8pnz9vKVQs9JGVa6wwr/6ddH7/yvcaCQnHRPK mnXyP2BViBlyDWQ71UC3N12YCoHE2cVmfrn4JeyK/gHCvcW3hUW4i5rMd5M5WZAeiJj3rvYh v8WMKDJOtZFXxwaYGbvFJNDdvdTHc2x2fGaWwmXMJn2xs1ZyFAeHQvrp49mS6PBQZzcx0XL5 cU9ZjhzOZDn6Apv45/C/lUJvPc3lo/pr5cmlOvPq1AsP6/xRXsEFX/SdvdxJ8w9KtGaxdJuf rpzLQ8Ht+H0lY2On1duYhmro8WglOypHy+TusYrDEry2qDNlc/bApQKtd9uqyDZ+rx8bGxyY qBP6bvsQx5YACI4p8R0J43tSqWwJTP/R5oPRQW2O1Ye1DEcdeyzZfifrQz58aoZrVQq+innR aDwu8qDB5UgmMQ7cjDSeAQABdghq7pqrA4P8lkA7qTG+aw8Z21OoAyZdUNm8NWJoQy8m4nUP gmeeQPRc0vjp5JkYPgTqwf08cluqO6vQuYL2YmwVBIbO7cE7LNGkPDA3RYMu+zPY9UUi/ln5 dcKuEStFZ5eqVyqVoZ9eu3RTCGIXAHe1NcfcMT9HT0DPp3+ieTxFx6RjY3kYTGLOwU0EVUNc NAEQAM2StBhJERQvgPcbCzjokShn0cRA4q2SvCOvOXD+0KapXMRFE+/PZeDyfv4dEKuCqeh0 hihSHlaxTzg3TcqUu54w2xYskG8Fq5tg3gm4kh1Gvh1LijIXX99ABA8eHxOGmLPRIBkXHqJY oHtCvPc6sYKNM9xbp6I4yF56xVLmHGJ61KaWKf5KKWYgA9kfHufbja7qR0c6H79LIsiYqf92 H1HNq1WlQpu/fh4/XAAaV1axHFt/dY/2kU05tLMj8GjeQDz1fHas7augL4argt4e+jum3Nwt yupodQBxncKAUbzwKcDrPqUFmfRbJ7ARw8491xQHZDsP82JRj4cOJX32sBg8nO2N5OsFJOcd 5IE9v6qfllkZDAh1Rb1h6DFYq9dcdPAHl4zOj9EHq99/CpyccOh7SrtWDNFFknCmLpowhct9 5ZnlavBrDbOV0W47gO33WkXMFI4il4y1+Bv89979rVYn8aBohEgET41SpyQz7fMkcaZU+ok/ +HYjC/qfDxT7tjKXqBQEscVODaFicsUkjheOD4BfWEcVUqa+XdUEciwG/SgNyxBZepj41oVq FPSVE+Ni2tNrW/e16b8mgXNngHSnbsr6pAIXZH3qFW+4TKPMGZ2rZ6zITrMip+12jgw4mGjy 5y06JZvA02rZT2k9aa7i9dUUFggaanI09jNGbRA/ABEBAAHCwXwEGAEKACYCGwwWIQSb0H4O DFH41ZZ3t1Qbk0N9O0FimwUCYDzvagUJFF+UtgAKCRAbk0N9O0Fim9JzD/0auoGtUu4mgnna oEEpQEOjgT7l9TVuO3Qa/SeH+E0m55y5Fjpp6ZToc481za3xAcxK/BtIX5Wn1mQ6+szfrJQ6 59y2io437BeuWIRjQniSxHz1kgtFECiV30yHRgOoQlzUea7FgsnuWdstgfWi6LxstswEzxLZ Sj1EqpXYZE4uLjh6dW292sO+j4LEqPYr53hyV4I2LPmptPE9Rb9yCTAbSUlzgjiyyjuXhcwM qf3lzsm02y7Ooq+ERVKiJzlvLd9tSe4jRx6Z6LMXhB21fa5DGs/tHAcUF35hSJrvMJzPT/+u /oVmYDFZkbLlqs2XpWaVCo2jv8+iHxZZ9FL7F6AHFzqEFdqGnJQqmEApiRqH6b4jRBOgJ+cY qc+rJggwMQcJL9F+oDm3wX47nr6jIsEB5ZftdybIzpMZ5V9v45lUwmdnMrSzZVgC4jRGXzsU EViBQt2CopXtHtYfPAO5nAkIvKSNp3jmGxZw4aTc5xoAZBLo0OV+Ezo71pg3AYvq0a3/oGRG KQ06ztUMRrj8eVtpImjsWCd0bDWRaaR4vqhCHvAG9iWXZu4qh3ipie2Y0oSJygcZT7H3UZxq fyYKiqEmRuqsvv6dcbblD8ZLkz1EVZL6djImH5zc5x8qpVxlA0A0i23v5QvN00m6G9NFF0Le D2GYIS41Kv4Isx2dEFh+/Q== In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 29/12/2023 08:11, Akhil R wrote: >> On 28/12/2023 10:33, Akhil R wrote: >>>>> +properties: >>>>> + compatible: >>>>> + const: nvidia,tegra234-se4-hash >>>> >>>> What is se4? >>>> >>>> Anyway, filename like compatible. >>> Similar to the above, the hardware name is SE4. >>> >>> nvidia,tegra234-se-aes and nvidia,tegra234-se-hash does look good to >>> me. But I am a bit concerned about the ABI breakage in case, we need a >> different compatible for the remaining instance. >> >> Isn't this a new device? What ABI breakage? What would be affected? > > I meant a scenario where we need to support SE1 instance as well. > > There is one more SE instance in Tegra, which is very similar to SE2 AES Engine. > But right now, it does not have a good use case in Linux. Now if we add > nvidia,tegra234-se-aes and nvidia,tegra234-se-hash, when SE1 needs to be > supported, I guess it would be confusing to find the right compatible for it. Hm, I still do not see possibility of breaking of ABI, but sure, se4 makes sense if instances are really different. Otherwise could be one compatible with some property. It kind of depends on the differences. Anyway, name the file based on the compatible. Best regards, Krzysztof