From: Krzysztof Kozlowski <krzk@kernel.org>
To: Kristian Brox <isyourbrainfoss@proton.me>
Cc: David Heidelberg <david@ixit.cz>,
Andrew Lunn <andrew+netdev@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>,
Paolo Abeni <pabeni@redhat.com>, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konradybcio@kernel.org>,
Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>,
Luca Weiss <luca.weiss@fairphone.com>,
Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>,
oe-linux-nfc@lists.linux.dev, netdev@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-msm@vger.kernel.org
Subject: Re: [PATCH v4 1/3] dt-bindings: net: nfc: add st,st21nfcd
Date: Thu, 3 Sep 2026 15:47:51 +0200 [thread overview]
Message-ID: <20260903-inescapable-discerning-ibis-fcfdde@quoll> (raw)
In-Reply-To: <20260902-fp5-st21nfcd-v4-v4-1-ded2f1c501be@proton.me>
On Wed, Sep 02, 2026 at 09:22:18PM +0000, Kristian Brox wrote:
> Add a compatible for the ST ST21NFCD NFC controller. Document optional
> SYS_CLK (clocks) and VPS_IO (vdd-io-supply).
>
> ST21NFCD is not I2C-only; the ST data brief lists I2C and SPI.
> Split the spi-max-frequency if/else: forbid it for
> st,st21nfcb-i2c and st,st21nfcc-i2c, require it for st,st21nfcb-spi,
> and leave it optional for st,st21nfcd. Add clocks and vdd-io-supply to
> the existing st,st21nfcb-i2c example instead of a second I2C example.
>
> Signed-off-by: Kristian Brox <isyourbrainfoss@proton.me>
> ---
> .../devicetree/bindings/net/nfc/st,st-nci.yaml | 49 +++++++++++++++-------
> 1 file changed, 35 insertions(+), 14 deletions(-)
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Best regards,
Krzysztof
next prev parent reply other threads:[~2026-09-03 13:47 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-02 21:22 [PATCH v4 0/3] nfc: st-nci: Fairphone 5 NFC bring-up (ST21NFCD) Kristian Brox
2026-09-02 21:22 ` [PATCH v4 1/3] dt-bindings: net: nfc: add st,st21nfcd Kristian Brox
2026-09-03 13:47 ` Krzysztof Kozlowski [this message]
2026-09-02 21:22 ` [PATCH v4 2/3] nfc: st-nci: add raw NCI path for ST21NFCD Kristian Brox
2026-09-03 21:22 ` sashiko-bot
2026-09-02 21:22 ` [PATCH v4 3/3] arm64: dts: qcom: qcm6490-fairphone-fp5: add ST21NFCD NFC Kristian Brox
2026-09-03 6:49 ` Konrad Dybcio
2026-09-03 7:49 ` Abel Vesa
2026-09-03 21:22 ` sashiko-bot
2026-09-18 8:08 ` [PATCH v4 0/3] nfc: st-nci: Fairphone 5 NFC bring-up (ST21NFCD) Luca Weiss
2026-09-23 19:35 ` Kristian Brox
2026-09-29 22:41 ` [PATCH 0/3] nfc: st-nci: three ST21NFCD fixes found bringing v4 up on the Fairphone 4 Tim auf der Landwehr
2026-09-29 22:41 ` [PATCH 1/3] nfc: st-nci: map proprietary RF 0x90 to MIFARE Tim auf der Landwehr
2026-09-29 22:41 ` [PATCH 2/3] nfc: st-nci: restart the reference clock on power-up Tim auf der Landwehr
2026-09-29 22:41 ` [PATCH 3/3] nfc: st-nci: treat the idle 0x7e read as no-data Tim auf der Landwehr
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