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charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org SGkgV2FkaW0sCgpPbiAzMC8wMy8yMiA3OjI1IHBtLCBXYWRpbSBFZ29yb3Ygd3JvdGU6Cj4gSGkg QnJ5YW4sCj4gCj4+ICsvKiAob3B0aW9uYWwpIGZvciBjb25zb2xlICovCj4+ICsmbWFpbl91YXJ0 MCB7Cj4+ICvCoMKgwqAgcGluY3RybC1uYW1lcyA9ICJkZWZhdWx0IjsKPj4gK8KgwqDCoCBwaW5j dHJsLTAgPSA8Jm1haW5fdWFydDBfcGluc19kZWZhdWx0PjsKPj4gK307Cj4+ICsKPj4gKy8qIHJl c2VydmVkIGZvciBmaXJtd2FyZSAqLwo+PiArJm1haW5fdWFydDEgewo+PiArwqDCoMKgIHN0YXR1 cyA9ICJyZXNlcnZlZCI7Cj4+ICt9Owo+IAo+IGszLWltYWdlLWdlbiBzYXlzIFVBUlQwIGlzIHVz ZWQgYXMgYSBkZWJ1ZyBpbnRlcmZhY2UuIFNlZQo+IAo+IAo+IGh0dHBzOi8vZ2l0LnRpLmNvbS9j Z2l0L2szLWltYWdlLWdlbi9rMy1pbWFnZS1nZW4vdHJlZS9zb2MvYW02NHgvZXZtL2JvYXJkLWNm Zy5jI244MQo+IAo+IAo+IFNvIGl0IHNlZW1zIHRoYXQgeW91IGNhbiBlbmFibGUgdWFydDEgaGVy ZS4gQnV0IHBlb3BsZSBtYXkgcnVuIGludG8gYQo+IGNvbmZsaWN0IHdpdGggdWFydDAgYW5kIGsz LWltYWdlLWdlbiBjb21waWxlZCB3aXRoIEVOQUJMRV9UUkFDRT0xLgo+IAo+IElmIEkgYW0gd3Jv bmcsIGNhbiB5b3UgcGxlYXNlIGNsYXJpZnkgd2h5IHlvdSBtYXJrIHVhcnQxIGFzIHJlc2VydmVk Lgo+IAoKV2UganVzdCBzZWVtIHRvIGhhdmUgc2FtZSBtYWNybyBzaGFyZWQgYWNyb3NzIG11bHRp cGxlIFNvQ3MsCkJPQVJEQ0ZHX1RSQUNFX0RTVF9VQVJUMCBtZWFucyBsb2dzIGFyZSBhbHNvIGRp cmVjdGVkIHRvIFVBUlQuIEluc3RhbmNlCm9mIFVBUlQgdXNlZCBmb3IgbG9nZ2luZyBpcyBwbGF0 Zm9ybSBzcGVjaWZpYy4KCk9uIEFNNjQgU1lTRlcgbG9ncyBhcmUgZGlyZWN0ZWQgdG8gTUFJTiBV QVJUMSAoTUFJTiBVQVJUMCBpcyB1c2VkIGZvcgpsaW51eCBjb25zb2xlKS4gSSB3aWxsIHdvcmsg aW50ZXJuYWxseSBhbmQgZ2V0IFNZU0ZXIGRvY3VtZW50YXRpb24KdXBkYXRlZCB0byByZWZsZWN0 IHRoZSBzYW1lLiBUaGFua3MhCgpSZWdhcmRzClZpZ25lc2gKCl9fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fCmxpbnV4LWFybS1rZXJuZWwgbWFpbGluZyBsaXN0 CmxpbnV4LWFybS1rZXJuZWxAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFk ZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LWFybS1rZXJuZWwK From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 70C12C433F5 for ; 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Thu, 31 Mar 2022 01:58:12 -0500 Received: from DFLE106.ent.ti.com (10.64.6.27) by DFLE104.ent.ti.com (10.64.6.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14; Thu, 31 Mar 2022 01:58:12 -0500 Received: from lelv0327.itg.ti.com (10.180.67.183) by DFLE106.ent.ti.com (10.64.6.27) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14 via Frontend Transport; Thu, 31 Mar 2022 01:58:12 -0500 Received: from [10.250.235.115] (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0327.itg.ti.com (8.15.2/8.15.2) with ESMTP id 22V6w8od127963; Thu, 31 Mar 2022 01:58:09 -0500 Message-ID: <16ad1a82-1e99-2957-720f-08d1238edcf4@ti.com> Date: Thu, 31 Mar 2022 12:28:08 +0530 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.7.0 Subject: Re: [RFC] arm64: dts: ti: introduce a minimal am642 device tree Content-Language: en-US To: Wadim Egorov , Bryan Brattlof , Nishanth Menon , Tero Kristo CC: Rob Herring , Krzysztof Kozlowski , , , References: <20220321155417.13267-1-bb@ti.com> <73a4a16b-193a-3075-61e9-82bcf21fc7d2@phytec.de> From: Vignesh Raghavendra In-Reply-To: <73a4a16b-193a-3075-61e9-82bcf21fc7d2@phytec.de> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Hi Wadim, On 30/03/22 7:25 pm, Wadim Egorov wrote: > Hi Bryan, > >> +/* (optional) for console */ >> +&main_uart0 { >> +    pinctrl-names = "default"; >> +    pinctrl-0 = <&main_uart0_pins_default>; >> +}; >> + >> +/* reserved for firmware */ >> +&main_uart1 { >> +    status = "reserved"; >> +}; > > k3-image-gen says UART0 is used as a debug interface. See > > > https://git.ti.com/cgit/k3-image-gen/k3-image-gen/tree/soc/am64x/evm/board-cfg.c#n81 > > > So it seems that you can enable uart1 here. But people may run into a > conflict with uart0 and k3-image-gen compiled with ENABLE_TRACE=1. > > If I am wrong, can you please clarify why you mark uart1 as reserved. > We just seem to have same macro shared across multiple SoCs, BOARDCFG_TRACE_DST_UART0 means logs are also directed to UART. Instance of UART used for logging is platform specific. On AM64 SYSFW logs are directed to MAIN UART1 (MAIN UART0 is used for linux console). I will work internally and get SYSFW documentation updated to reflect the same. Thanks! Regards Vignesh