From patchwork Mon Feb 28 22:54:00 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stephan Gerhold X-Patchwork-Id: 548261 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 B34A1C4321E for ; Mon, 28 Feb 2022 22:58:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229765AbiB1W7d (ORCPT ); Mon, 28 Feb 2022 17:59:33 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53156 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229895AbiB1W7b (ORCPT ); Mon, 28 Feb 2022 17:59:31 -0500 X-Greylist: delayed 179 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Mon, 28 Feb 2022 14:58:50 PST Received: from mo4-p02-ob.smtp.rzone.de (mo4-p02-ob.smtp.rzone.de [85.215.255.80]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8EE419D07D; Mon, 28 Feb 2022 14:58:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; t=1646088948; s=strato-dkim-0002; d=gerhold.net; h=References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Cc:Date: From:Subject:Sender; bh=dqH8VpKpHp6Ppb3BmpkraxlbOG5eMMt8r+ipCo9yp6E=; b=MkHeIQiJesf3XeP1Cey8nnMxMbEQs1y+L9AVlrFHRCKKnlyNl37NmqdpimGrj0Jq5v 9g1S4GQ4vX8g0EROqv9hScmXX/LkpEn6WuNEKNRVeamVpkUk8UTGOtRHxHeoTeMFvd2R 7SnAcNwWPjR7vjoUVI33OU7AqF/xZbcirEUeOkmgdoT2ah+1D7a4Rwdzm7dcqCTX5xf9 /lMQGZnHDvpv+nUNTg17W6v8mvHLJns0ZILnu0oZAUsCPyiBs1e07OVHijXVEO5gLWrO 1j8OJ92OMkyA9+VnJn+PKJ70jLv/5TVW9j0//u/5nGLN5yzgPAWwMQ9MrsFQgXWSghjY NoGg== Authentication-Results: strato.com; dkim=none X-RZG-AUTH: ":P3gBZUipdd93FF5ZZvYFPugejmSTVR2nRPhVORvLd4SsytBXQ7UOGqRde+a0fyL/oVo=" X-RZG-CLASS-ID: mo00 Received: from droid.. by smtp.strato.de (RZmta 47.40.1 AUTH) with ESMTPSA id kdc58dy1SMtlWqG (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256 bits)) (Client did not present a certificate); Mon, 28 Feb 2022 23:55:47 +0100 (CET) From: Stephan Gerhold To: Bjorn Andersson Cc: Andy Gross , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, ~postmarketos/upstreaming@lists.sr.ht, Mathieu Poirier , linux-remoteproc@vger.kernel.org, phone-devel@vger.kernel.org, Aleksander Morgado , Stephan Gerhold Subject: [PATCH v2 2/2] arm64: dts: qcom: msm8916: Add BAM-DMUX for WWAN network interfaces Date: Mon, 28 Feb 2022 23:54:00 +0100 Message-Id: <20220228225400.146555-3-stephan@gerhold.net> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220228225400.146555-1-stephan@gerhold.net> References: <20220228225400.146555-1-stephan@gerhold.net> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org The BAM Data Multiplexer provides access to the network data channels of modems integrated into many older Qualcomm SoCs, including MSM8916. Add the nodes for the BAM DMA engine and BAM-DMUX to enable using WWAN on smartphones/tablets based on MSM8916. This should work out of the box with open-source WWAN userspace such as ModemManager. The nodes are disabled by default to avoid loading unnecessary drivers on devices that cannot use BAM-DMUX (e.g. DragonBoard 410c). However, strictly speaking the nodes could be enabled by default since both the bam_dma and bam_dmux driver will simply do nothing if the modem does not announce any BAM-DMUX channels. Signed-off-by: Stephan Gerhold --- Changes in v2: None. --- arch/arm64/boot/dts/qcom/msm8916.dtsi | 30 +++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/msm8916.dtsi b/arch/arm64/boot/dts/qcom/msm8916.dtsi index 0a0be43529f6..26b321d2dca1 100644 --- a/arch/arm64/boot/dts/qcom/msm8916.dtsi +++ b/arch/arm64/boot/dts/qcom/msm8916.dtsi @@ -1314,6 +1314,20 @@ spmi_bus: spmi@200f000 { #interrupt-cells = <4>; }; + bam_dmux_dma: dma-controller@4044000 { + compatible = "qcom,bam-v1.7.0"; + reg = <0x04044000 0x19000>; + interrupts = ; + #dma-cells = <1>; + qcom,ee = <0>; + + num-channels = <6>; + qcom,num-ees = <1>; + qcom,powered-remotely; + + status = "disabled"; + }; + mpss: remoteproc@4080000 { compatible = "qcom,msm8916-mss-pil", "qcom,q6v5-pil"; reg = <0x04080000 0x100>, @@ -1357,6 +1371,22 @@ mpss { memory-region = <&mpss_mem>; }; + bam_dmux: bam-dmux { + compatible = "qcom,bam-dmux"; + + interrupt-parent = <&hexagon_smsm>; + interrupts = <1 IRQ_TYPE_EDGE_BOTH>, <11 IRQ_TYPE_EDGE_BOTH>; + interrupt-names = "pc", "pc-ack"; + + qcom,smem-states = <&apps_smsm 1>, <&apps_smsm 11>; + qcom,smem-state-names = "pc", "pc-ack"; + + dmas = <&bam_dmux_dma 4>, <&bam_dmux_dma 5>; + dma-names = "tx", "rx"; + + status = "disabled"; + }; + smd-edge { interrupts = ;