From patchwork Fri May 8 06:33:32 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Akash Asthana X-Patchwork-Id: 214003 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CC274C54E8E for ; Fri, 8 May 2020 06:34:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A3EF7207DD for ; Fri, 8 May 2020 06:34:35 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="OrBw5lSM" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727107AbgEHGef (ORCPT ); Fri, 8 May 2020 02:34:35 -0400 Received: from mail27.static.mailgun.info ([104.130.122.27]:21063 "EHLO mail27.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727082AbgEHGee (ORCPT ); Fri, 8 May 2020 02:34:34 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1588919674; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=MSkTBpyv6SDcq2wuoajThkNs/mXxqNppGp1Bv7EIaQM=; b=OrBw5lSMyREHPIwf6pkT7/SrEHjm+vKz0GdKdwoE/1zGq3TLSRla36WLK9NRtrBXHus9x0r4 InWlNqVLjYAscNOOBulc0hvD8Bg+qb5RzAG1MI/z1hVrvht6Pu9vLThhODA0SQBC9or8DuGz b7Z2y9/0r0K/hPaoxTxRzw0pluE= X-Mailgun-Sending-Ip: 104.130.122.27 X-Mailgun-Sid: WyIzZmY0MiIsICJsaW51eC1zZXJpYWxAdmdlci5rZXJuZWwub3JnIiwgImJlOWU0YSJd Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by mxa.mailgun.org with ESMTP id 5eb4fd55.7f50568ea7a0-smtp-out-n05; Fri, 08 May 2020 06:33:57 -0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 055F6C432C2; Fri, 8 May 2020 06:33:56 +0000 (UTC) Received: from akashast-linux.qualcomm.com (blr-c-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.19.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: akashast) by smtp.codeaurora.org (Postfix) with ESMTPSA id 976B2C433D2; Fri, 8 May 2020 06:33:49 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 976B2C433D2 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=akashast@codeaurora.org From: Akash Asthana To: gregkh@linuxfoundation.org, agross@kernel.org, bjorn.andersson@linaro.org, wsa@the-dreams.de, broonie@kernel.org, mark.rutland@arm.com, robh+dt@kernel.org Cc: linux-i2c@vger.kernel.org, linux-spi@vger.kernel.org, devicetree@vger.kernel.org, swboyd@chromium.org, mgautam@codeaurora.org, linux-arm-msm@vger.kernel.org, linux-serial@vger.kernel.org, mka@chromium.org, dianders@chromium.org, evgreen@chromium.org, georgi.djakov@linaro.org, Akash Asthana Subject: [PATCH V5 0/7] Add interconnect support to QSPI and QUP drivers Date: Fri, 8 May 2020 12:03:32 +0530 Message-Id: <1588919619-21355-1-git-send-email-akashast@codeaurora.org> X-Mailer: git-send-email 2.7.4 Sender: linux-serial-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-serial@vger.kernel.org V5 depend on below patches. - https://lore.kernel.org/patchwork/patch/1237642/ [Add helpers for enabling/disabling a path] - https://patchwork.kernel.org/patch/11491027/ [Add devm_of_icc_get() as exported API for users ] dt-binding patch for QUP drivers. - https://patchwork.kernel.org/patch/11534149/ [Convert QUP bindings to YAML and add ICC, pin swap doc] High level design: - QUP wrapper/common driver. Vote for QUP core on behalf of earlycon from probe. Remove BW vote during earlycon exit call - SERIAL driver. Vote only for CPU/CORE path because driver is in FIFO mode only Vote/unvote from qcom_geni_serial_pm func. Bump up the CPU vote from set_termios call based on real time need - I2C driver. Vote for CORE/CPU/DDR path Vote/unvote from runtime resume/suspend callback As bus speed for I2C is fixed from probe itself no need for bump up. - SPI QUP driver. Vote only for CPU/CORE path because driver is in FIFO mode only Vote/unvote from runtime resume/suspend callback Bump up CPU vote based on real time need per transfer. - QSPI driver. Vote only for CPU path Vote/unvote from runtime resume/suspend callback Bump up CPU vote based on real time need per transfer. Changes in V2: - Add devm_of_icc_get() API interconnect core. - Add ICC support to common driver to fix earlyconsole crash. Changes in V3: - Define common ICC APIs in geni-se driver and use it across geni based I2C,SPI and UART driver. Changes in V4: - Add a patch to ICC core to scale peak requirement as twice of average if it is not mentioned explicilty. Changes in V5: - As per Georgi's suggestion removed patch from ICC core for assuming peak_bw as twice of average when it's not mentioned, instead assume it equall to avg_bw and keep this assumption in ICC client itself. - As per Matthias suggestion use enum for GENI QUP ICC paths. Akash Asthana (7): soc: qcom: geni: Support for ICC voting soc: qcom-geni-se: Add interconnect support to fix earlycon crash i2c: i2c-qcom-geni: Add interconnect support spi: spi-geni-qcom: Add interconnect support tty: serial: qcom_geni_serial: Add interconnect support spi: spi-qcom-qspi: Add interconnect support arm64: dts: sc7180: Add interconnect for QUP and QSPI arch/arm64/boot/dts/qcom/sc7180.dtsi | 127 ++++++++++++++++++++++++++++ drivers/i2c/busses/i2c-qcom-geni.c | 29 ++++++- drivers/soc/qcom/qcom-geni-se.c | 155 ++++++++++++++++++++++++++++++++++ drivers/spi/spi-geni-qcom.c | 32 ++++++- drivers/spi/spi-qcom-qspi.c | 59 ++++++++++++- drivers/tty/serial/qcom_geni_serial.c | 38 ++++++++- include/linux/qcom-geni-se.h | 44 ++++++++++ 7 files changed, 478 insertions(+), 6 deletions(-)