From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AC1F1134CC for ; Wed, 5 Jul 2023 17:36:07 +0000 (UTC) Received: from mx07-00178001.pphosted.com (mx08-00178001.pphosted.com [91.207.212.93]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 04DE91BEB; Wed, 5 Jul 2023 10:35:41 -0700 (PDT) Received: from pps.filterd (m0046660.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 365FaBp3003086; Wed, 5 Jul 2023 19:35:16 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h=message-id : date : mime-version : subject : to : cc : references : from : in-reply-to : content-type : content-transfer-encoding; s=selector1; bh=shpntqm9Lb88tQ8tlCGuG2FwYoCeA99QpOjJ1mJ95MI=; b=B9NUeEVnBg8MdHStPnL4TOmJhyuqDrSpAiTXxO/nPPpzy04upCGkWFZloothm1IsdlaP X2dM2UcrLRYot6pDInpUaDfpMw4tRdOgSMjIIUt05sxIHPJTt05NtgJdfiSkjWYJGqQo 5Qf6gvHVZoCkeCGLEsdD07XE10xUn4T3IucwxfOuRptLSABHo82p+XsFpOmpXmiiGV0P XYKMcsbwul2uScBGSCEWMtTWo929/YaPT+Wh3TxrAMZmjHQzF56NlcYYWFxkdKCpyT5u NiyW4MLstguYxELgKwv13IwhUcKcDJWT1p8IlKqjWxQyak83KOQne1tFXm8DXME2V55K Uw== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3rn8c9t3jy-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 05 Jul 2023 19:35:16 +0200 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 2E6D9100057; Wed, 5 Jul 2023 19:35:15 +0200 (CEST) Received: from Webmail-eu.st.com (shfdag1node1.st.com [10.75.129.69]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 2427D24C451; Wed, 5 Jul 2023 19:35:15 +0200 (CEST) Received: from [10.201.21.121] (10.201.21.121) by SHFDAG1NODE1.st.com (10.75.129.69) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.21; Wed, 5 Jul 2023 19:35:12 +0200 Message-ID: Date: Wed, 5 Jul 2023 19:35:07 +0200 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.11.0 Subject: Re: [PATCH v3 0/6] Introduce STM32 system bus Content-Language: en-US To: , , , , , , , , , , , , , , , , CC: , , , , , , , , , , , , , , , References: <20230127164040.1047583-1-gatien.chevallier@foss.st.com> From: Gatien CHEVALLIER In-Reply-To: <20230127164040.1047583-1-gatien.chevallier@foss.st.com> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-Originating-IP: [10.201.21.121] X-ClientProxiedBy: SHFCAS1NODE1.st.com (10.75.129.72) To SHFDAG1NODE1.st.com (10.75.129.69) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-07-05_09,2023-07-05_01,2023-05-22_02 X-Spam-Status: No, score=-2.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,NICE_REPLY_A,RCVD_IN_DNSWL_LOW,SPF_HELO_NONE, SPF_PASS,T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Hello all, I'm abandoning this series for: https://lore.kernel.org/lkml/20230705172759.1610753 Sorry for the noise. Best regards, Gatien On 1/27/23 17:40, Gatien Chevallier wrote: > Document STM32 System Bus. This bus is intended to control firewall > access for the peripherals connected to it. > > For every peripheral, the bus checks the firewall registers to see > if the peripheral is configured as non-secure. If the peripheral > is configured as secure, the node is marked populated, so the > device won't be probed. > > This is useful as a firewall configuration sanity check and avoid > platform crashes in case peripherals are incorrectly configured. > > The STM32 System Bus implements the feature-domain-controller > bindings. It is used by peripherals to reference a domain > controller, in this case the firewall feature domain. > The bus uses the ID referenced by the feature-domains property to > know where to look in the firewall to get the security configuration > for the peripheral. This allows a device tree description rather > than a hardcoded peripheral table in the bus driver. > > On STM32MP13/15 platforms, the firewall bus is represented by the > ETZPC node, which is responsible for the securing / MCU isolating > the capable peripherals. > > STM32MP13/15 device trees are updated in this series to implement > the bus. All peripherals that are securable or MCU isolation capable > by the ETZPC are connected to the bus. > > Changes in V2: > - Corrected YAMLS errors highlighted by Rob's robot > - Re-ordered Signed-off-by tags in two patches > > Changes in V3: > - Document feature-domains property in YAML documentation for > concerned periperals under the System Bus > - Fix STM32 System Bus YAML documentation > - Remove STM32 System bus bindings that were currently used > as helpers for device tree > - Correct few errors in driver > - Add missing peripherals under the System Bus that were in > SoC variation device tree files > - Fix node names > > Gatien Chevallier (5): > dt-bindings: treewide: add feature-domains description in binding > files > dt-bindings: bus: add STM32 System Bus > bus: stm32_sys_bus: add support for STM32MP15 and STM32MP13 system bus > ARM: dts: stm32: add ETZPC as a system bus for STM32MP15x boards > ARM: dts: stm32: add ETZPC as a system bus for STM32MP13x boards > > Oleksii Moisieiev (1): > dt-bindings: Document common device controller bindings > > .../devicetree/bindings/bus/st,sys-bus.yaml | 127 + > .../bindings/crypto/st,stm32-hash.yaml | 5 + > .../devicetree/bindings/dma/st,stm32-dma.yaml | 5 + > .../bindings/dma/st,stm32-dmamux.yaml | 5 + > .../feature-domain-controller.yaml | 84 + > .../devicetree/bindings/i2c/st,stm32-i2c.yaml | 5 + > .../bindings/iio/adc/st,stm32-adc.yaml | 5 + > .../bindings/iio/adc/st,stm32-dfsdm-adc.yaml | 5 + > .../bindings/iio/dac/st,stm32-dac.yaml | 5 + > .../bindings/media/st,stm32-cec.yaml | 5 + > .../bindings/media/st,stm32-dcmi.yaml | 5 + > .../memory-controllers/st,stm32-fmc2-ebi.yaml | 5 + > .../bindings/mfd/st,stm32-lptimer.yaml | 5 + > .../bindings/mfd/st,stm32-timers.yaml | 6 + > .../devicetree/bindings/mmc/arm,pl18x.yaml | 5 + > .../devicetree/bindings/net/stm32-dwmac.yaml | 5 + > .../bindings/phy/phy-stm32-usbphyc.yaml | 5 + > .../bindings/regulator/st,stm32-vrefbuf.yaml | 5 + > .../devicetree/bindings/rng/st,stm32-rng.yaml | 5 + > .../bindings/serial/st,stm32-uart.yaml | 5 + > .../bindings/sound/st,stm32-i2s.yaml | 5 + > .../bindings/sound/st,stm32-sai.yaml | 5 + > .../bindings/sound/st,stm32-spdifrx.yaml | 5 + > .../bindings/spi/st,stm32-qspi.yaml | 5 + > .../devicetree/bindings/spi/st,stm32-spi.yaml | 5 + > .../devicetree/bindings/usb/dwc2.yaml | 5 + > MAINTAINERS | 6 + > arch/arm/boot/dts/stm32mp131.dtsi | 407 +-- > arch/arm/boot/dts/stm32mp133.dtsi | 51 +- > arch/arm/boot/dts/stm32mp13xc.dtsi | 19 +- > arch/arm/boot/dts/stm32mp13xf.dtsi | 18 +- > arch/arm/boot/dts/stm32mp151.dtsi | 2722 +++++++++-------- > arch/arm/boot/dts/stm32mp153.dtsi | 52 +- > arch/arm/boot/dts/stm32mp15xc.dtsi | 19 +- > drivers/bus/Kconfig | 9 + > drivers/bus/Makefile | 1 + > drivers/bus/stm32_sys_bus.c | 168 + > 37 files changed, 2208 insertions(+), 1596 deletions(-) > create mode 100644 Documentation/devicetree/bindings/bus/st,sys-bus.yaml > create mode 100644 Documentation/devicetree/bindings/feature-controllers/feature-domain-controller.yaml > create mode 100644 drivers/bus/stm32_sys_bus.c >