Return-path: Received: from mail-ot0-f195.google.com ([74.125.82.195]:35856 "EHLO mail-ot0-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754356AbdCTPi1 (ORCPT ); Mon, 20 Mar 2017 11:38:27 -0400 Date: Mon, 20 Mar 2017 10:07:33 -0500 From: Rob Herring To: Sven Eckelmann Cc: ath10k@lists.infradead.org, linux-wireless@vger.kernel.org, devicetree@vger.kernel.org, mark.rutland@arm.com, ext.waldemar.rymarkiewicz@tieto.com, kvalo@codeaurora.org Subject: Re: [PATCH 1/2] dt: bindings: add new dt entry for ath10k calibration variant Message-ID: <20170320150733.25bufnzrhh7xabml@rob-hp-laptop> (sfid-20170320_163853_897085_23EF09B6) References: <20170310080615.22958-1-sven.eckelmann@openmesh.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <20170310080615.22958-1-sven.eckelmann@openmesh.com> Sender: linux-wireless-owner@vger.kernel.org List-ID: On Fri, Mar 10, 2017 at 09:06:14AM +0100, Sven Eckelmann wrote: > The bus + bmi-chip-id + bmi-board-id is not enough to identify the correct > board data file on QCA4019 based devices. Multiple different boards share > the same values. Only the original reference designs can currently be > identified and loaded from the board-2.bin. But these will not result in > the correct calibration data when combined with the pre-calibration data > from the device. > > An additional "variant" information has to be provided (via SMBIOS or DT) > to select the correct board data for a design which was modified by an ODM. > > Signed-off-by: Sven Eckelmann > --- > Since RFC: > > - Split patch in DT doc and ath10k part (thanks Christian Lamparter) > - Remove the words "bmi-chip-id" and "bmi-board-id" and replace them with > more generic "device specific ids" > --- > Documentation/devicetree/bindings/net/wireless/qcom,ath10k.txt | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.txt b/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.txt > index 74d7f0af209c..3d2a031217da 100644 > --- a/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.txt > +++ b/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.txt > @@ -41,6 +41,9 @@ Optional properties: > - qcom,msi_addr: MSI interrupt address. > - qcom,msi_base: Base value to add before writing MSI data into > MSI address register. > +- qcom,ath10k-calibration-variant: string to search for in the board-2.bin > + variant list with the same bus and device > + specific ids Sounds like you should use a more specific compatible string. > - qcom,ath10k-calibration-data : calibration data + board specific data > as an array, the length can vary between > hw versions. > -- > 2.11.0 >