From patchwork Thu Sep 5 10:00:36 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vitor Soares X-Patchwork-Id: 1158335 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=synopsys.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=synopsys.com header.i=@synopsys.com header.b="MZ1vo3sW"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 46PGRL0hQQz9sP6 for ; Thu, 5 Sep 2019 20:01:02 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732734AbfIEKA4 (ORCPT ); Thu, 5 Sep 2019 06:00:56 -0400 Received: from smtprelay-out1.synopsys.com ([198.182.61.142]:49732 "EHLO smtprelay-out1.synopsys.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387592AbfIEKA4 (ORCPT ); Thu, 5 Sep 2019 06:00:56 -0400 Received: from mailhost.synopsys.com (mdc-mailhost1.synopsys.com [10.225.0.209]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by smtprelay-out1.synopsys.com (Postfix) with ESMTPS id BF8C2C29BA; Thu, 5 Sep 2019 10:00:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=synopsys.com; s=mail; t=1567677655; bh=Hd5e4FWS+UlKygYV+pJ0TjvOiFk6XNsxRtjAc94qTX0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:In-Reply-To: References:From; b=MZ1vo3sW/wPI1OpakmeAaAyM1I+pluxXz3hhJQbYXfulxarKlaj22QhFcxdnjT4dx /gSE7pjEMvVYjS8tUNFYXo17mky0HGrUfJYDW56DOI6d73xKo0ysQncTiM956GM9HF 8UEjFWzj6oSeYMBfs/YsQ5PP28tTJgBRaHtlObIUoChH6AIbCT+zWwHZYLAiSI16AR mQ+5XhsLo3LBZWS/AoYpfojf07xrmPIt4WEVFL2uXdpIPlrU4w6mhuzMWWXGY2n9KT fTBsC3fyRHkOgkcSn2AsQE5SobNVDe0X/tgJ2zTC0vhb0Y6zqBI8rkhwITi5lmOSg7 vOTJzA4djQVeQ== Received: from de02.synopsys.com (de02.internal.synopsys.com [10.225.17.21]) by mailhost.synopsys.com (Postfix) with ESMTP id 8BF84A0064; Thu, 5 Sep 2019 10:00:49 +0000 (UTC) Received: from de02dwia024.internal.synopsys.com (de02dwia024.internal.synopsys.com [10.225.19.81]) by de02.synopsys.com (Postfix) with ESMTP id 6EB513F3B9; Thu, 5 Sep 2019 12:00:49 +0200 (CEST) From: Vitor Soares To: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-i3c@lists.infradead.org Cc: bbrezillon@kernel.org, robh+dt@kernel.org, mark.rutland@arm.com, pgaj@cadence.com, Joao.Pinto@synopsys.com, Vitor Soares Subject: [PATCH v3 3/5] dt-bindings: i3c: Make 'assigned-address' valid if static address == 0 Date: Thu, 5 Sep 2019 12:00:36 +0200 Message-Id: <35e317ef6c9c0c729f713e57a55a2cd8bd55899b.1567608245.git.vitor.soares@synopsys.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: References: In-Reply-To: References: Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org The I3C devices without a static address can require a specific dynamic address for priority reasons. Let's update the binding document to make the 'assigned-address' property valid if static address == 0 and add an example with this use case. Signed-off-by: Vitor Soares Reviewed-by: Rob Herring --- Change in v3: - Add Rob rb-tag Change in v2: - Fix typo in commit message Documentation/devicetree/bindings/i3c/i3c.txt | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/i3c/i3c.txt b/Documentation/devicetree/bindings/i3c/i3c.txt index ab729a0..c851e75 100644 --- a/Documentation/devicetree/bindings/i3c/i3c.txt +++ b/Documentation/devicetree/bindings/i3c/i3c.txt @@ -98,9 +98,7 @@ Required properties Optional properties ------------------- -- assigned-address: dynamic address to be assigned to this device. This - property is only valid if the I3C device has a static - address (first cell of the reg property != 0). +- assigned-address: dynamic address to be assigned to this device. Example: @@ -129,6 +127,15 @@ Example: /* * I3C device without a static I2C address but requiring + * specific dynamic address. + */ + sensor@0,39200154004 { + reg = <0x0 0x6072 0x303904d2>; + assigned-address = <0xb>; + }; + + /* + * I3C device without a static I2C address but requiring * resources described in the DT. */ sensor@0,39200154004 { From patchwork Thu Sep 5 10:00:37 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vitor Soares X-Patchwork-Id: 1158334 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=synopsys.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=synopsys.com header.i=@synopsys.com header.b="ExqotPmX"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 46PGR9078jz9sBF for ; Thu, 5 Sep 2019 20:00:53 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387629AbfIEKAw (ORCPT ); Thu, 5 Sep 2019 06:00:52 -0400 Received: from smtprelay-out1.synopsys.com ([198.182.47.102]:44176 "EHLO smtprelay-out1.synopsys.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726115AbfIEKAv (ORCPT ); Thu, 5 Sep 2019 06:00:51 -0400 Received: from mailhost.synopsys.com (mdc-mailhost1.synopsys.com [10.225.0.209]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by smtprelay-out1.synopsys.com (Postfix) with ESMTPS id 04CEFC0DD3; Thu, 5 Sep 2019 10:00:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=synopsys.com; s=mail; t=1567677651; bh=GosWZM2QU8S12Kgv9mW7HdYKBOJWFoe+3pD+Un3G66o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:In-Reply-To: References:From; b=ExqotPmXtPyrttYl0egCKAjoHy9K3A8M6MiMfU7TFhvGai2DEmP5d1TOunCx7WhsA bX/GnJnv1VfJMFtbFDRdN4gssi2BYXCTPQlYC70C2+asnrlOjoLQ1ZNgyRxIWobJDe rVyL2GEi/k7VN0bRoa6+QT+6F2pPczzRRDSXH7RYBjAj1tl8SBeCIbHd3i+9ysOLZD hE4U3OjOjWVs+wqf70sAlHGL4p5llwvdm1A5ZodZ2N5eHp1LTag1JfbKvxhkeTLgrk 8R+WoNjcQTefQyM8qzXAVM+kK/a860lcqFq4C1w8ozE4F6B6DXLJ7FaTjyO+zeHW0Q ab8UtiEl4ayVg== Received: from de02.synopsys.com (germany.internal.synopsys.com [10.225.17.21]) by mailhost.synopsys.com (Postfix) with ESMTP id 9989BA0061; Thu, 5 Sep 2019 10:00:49 +0000 (UTC) Received: from de02dwia024.internal.synopsys.com (de02dwia024.internal.synopsys.com [10.225.19.81]) by de02.synopsys.com (Postfix) with ESMTP id 826F43F3BC; Thu, 5 Sep 2019 12:00:49 +0200 (CEST) From: Vitor Soares To: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-i3c@lists.infradead.org Cc: bbrezillon@kernel.org, robh+dt@kernel.org, mark.rutland@arm.com, pgaj@cadence.com, Joao.Pinto@synopsys.com, Vitor Soares Subject: [PATCH v3 4/5] dt-bindings: i3c: add a note for no guarantee of 'assigned-address' use Date: Thu, 5 Sep 2019 12:00:37 +0200 Message-Id: X-Mailer: git-send-email 2.7.4 In-Reply-To: References: In-Reply-To: References: Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org By default, the framework will try to assign the 'assigned-address' to the device but if the address is already in use the device dynamic address will be different. Signed-off-by: Vitor Soares Reviewed-by: Rob Herring --- Change in v3: - Add Rob rb-tag Documentation/devicetree/bindings/i3c/i3c.txt | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/i3c/i3c.txt b/Documentation/devicetree/bindings/i3c/i3c.txt index c851e75..e777f09 100644 --- a/Documentation/devicetree/bindings/i3c/i3c.txt +++ b/Documentation/devicetree/bindings/i3c/i3c.txt @@ -98,7 +98,9 @@ Required properties Optional properties ------------------- -- assigned-address: dynamic address to be assigned to this device. +- assigned-address: dynamic address to be assigned to this device. The framework + will try to assign this dynamic address but if something + fails the device dynamic address will be different. Example: