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Thu, 11 Jun 2026 02:14:11 -0700 (PDT) Date: Thu, 11 Jun 2026 11:14:06 +0200 From: Stephan Gerhold To: Konrad Dybcio Cc: Vishnu Santhosh , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, bjorn.andersson@oss.qualcomm.com, chris.lew@oss.qualcomm.com Subject: Re: [PATCH] arm64: dts: qcom: shikra: Add BAM-DMUX support Message-ID: References: <20260611-qcom-shikra-dts-bam-dmux-v1-1-43d0b43d41ef@oss.qualcomm.com> <61fea0fa-d7af-47f4-a3c7-21d881090008@oss.qualcomm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <61fea0fa-d7af-47f4-a3c7-21d881090008@oss.qualcomm.com> On Thu, Jun 11, 2026 at 11:10:51AM +0200, Konrad Dybcio wrote: > On 6/11/26 10:55 AM, Stephan Gerhold wrote: > > On Thu, Jun 11, 2026 at 02:11:59PM +0530, Vishnu Santhosh wrote: > >> Add required nodes to enable the upstream BAM-DMUX WWAN driver on > >> Qualcomm Shikra SoC. > >> > >> The SMSM (Shared Memory State Machine) node provides the power > >> control signaling between the AP and modem for BAM-DMUX. The > >> BAM DMA controller node describes the A2 modem BAM hardware as a > >> standard DMA controller. The BAM-DMUX node references the DMA > >> channels and the pc/pc-ack interrupt lines from the modem SMSM > >> entry for power control signaling. > >> > >> Signed-off-by: Vishnu Santhosh > > > > I'm quite surprised to see this 15+ years(?) old hardware block being > > brought back to a new SoC. Is Shikra not using IPA? > > That's correct. > Ok, thanks for the confirmation. It's nice to see my driver running on some new SoCs 6 years later. :-) Thanks, Stephan