From mboxrd@z Thu Jan 1 00:00:00 1970 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=-2.5 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS autolearn=ham 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 4C477C43441 for ; Sun, 18 Nov 2018 09:32:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 942DA2080F for ; Sun, 18 Nov 2018 09:32:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=baylibre-com.20150623.gappssmtp.com header.i=@baylibre-com.20150623.gappssmtp.com header.b="Rprn+lFA" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 942DA2080F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727080AbeKRTwm (ORCPT ); Sun, 18 Nov 2018 14:52:42 -0500 Received: from mail-wm1-f65.google.com ([209.85.128.65]:40676 "EHLO mail-wm1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725914AbeKRTwm (ORCPT ); Sun, 18 Nov 2018 14:52:42 -0500 Received: by mail-wm1-f65.google.com with SMTP id q26so2440200wmf.5 for ; Sun, 18 Nov 2018 01:32:54 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20150623.gappssmtp.com; s=20150623; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-transfer-encoding; bh=5piY5NeBYTHD7VfP0XkIRZSk8MmU++fiKJd7y65fHKg=; b=Rprn+lFA9HFbjXhskbHbLLa2Bmks4hKdWcWaJiwq0KgVYHFYm1wckv+q78ZO8FwY9/ 7l4wGpMVQBsaVJ8BdLKv9vfNwLHR4ZXAsHQdbkFFFOQWqrndI5Tz0IZfvOpNwXUHoCKL /N18AmfB+vtGDAsYaBoqClquUTJ/5VPcYS32Spdos44D7lGselcPnBBhYihly8QytTPf 7vrQxP093LEqDlV7ueRiiA70IKRhLg39ZX+Ffi9l+olRLMGFDcg6TO8zJCfOizC3Zwkn XBxT8ejCVAjJwzqhmmO+cClqMshHZ6RUS7b+rqbiTobpvKsqE3M/BDYFkXRf41absDyJ kk+A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:message-id:date:from:user-agent:mime-version:to :cc:subject:references:in-reply-to:content-transfer-encoding; bh=5piY5NeBYTHD7VfP0XkIRZSk8MmU++fiKJd7y65fHKg=; b=BVAlGqy+DA5owRDPr36ezUafTwR/diosw9NFsroTh8RwH52GIEFPZl5uXRois53vnZ wQmN4Y2orQd0zfgO40OiR+qoUD32MH24wSvc/GYjimNE0d2DjcUsHSNzERykgamxVBNf S/A+TlLnmnqRZlDuPmOwlcre3C3sWkZgQZeVsKDr3hqUlp9RITP5Z78RCtxcCrUKkNdK 7V4dgYYP6Cj+uzgkU++7xYQ6058oGS3/i5L/TFViPNoWkB8rLMULUIaIAg/mfZjtNGM4 q78M1ai4KFpjww8w+nCzCwl1dbJzoT1TJyygRTPBJsjetSqdcoB+mjSgvxmevM31W0Vk l+aA== X-Gm-Message-State: AA+aEWbiYVWd9JYbhnJKekMpUIEOSSh8LOcrf6Clzuk2lnNNIqsL6sPF wxW7M/3nHw791JnmDLljTRxdmQ== X-Google-Smtp-Source: AFSGD/Vx7OSZwjc+k04ysmjb9qJcQXEN4pGUYEqigqHCHQzyTgeI2uLnIPgHTHlZcUz12FcvVY2rjQ== X-Received: by 2002:a1c:2c03:: with SMTP id s3-v6mr3679200wms.38.1542533572892; Sun, 18 Nov 2018 01:32:52 -0800 (PST) Received: from Armstrongs-MacBook-Pro.local ([2a01:cb1d:4ce:ea00:693b:677a:1628:d8ff]) by smtp.gmail.com with ESMTPSA id 197-v6sm26659507wmh.44.2018.11.18.01.32.52 (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Sun, 18 Nov 2018 01:32:52 -0800 (PST) Message-ID: <5BF131C3.9040808@baylibre.com> Date: Sun, 18 Nov 2018 10:32:51 +0100 From: Neil Armstrong User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: khilman@baylibre.com CC: linux-amlogic@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 0/3] Add Amlogic Meson GX SoC Clock Measure Driver References: <20181114131627.17766-1-narmstrong@baylibre.com> <75ca31ca-82f4-c9e9-0d73-29fde405c47c@baylibre.com> In-Reply-To: <75ca31ca-82f4-c9e9-0d73-29fde405c47c@baylibre.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Le 14/11/2018 14:17, Neil Armstrong a écrit : > On 14/11/2018 14:16, Neil Armstrong wrote: >> The Amlogic Meson GX SoCs embeds a clock measurer IP to measure the internal >> clocks frequencyies. >> The precision is determined by stepping into the divider until the counter >> overflows. >> The debugfs slows a pretty summary and each clock can be measured >> individually aswell. >> >> Thsi patchset includes the dt-bindings, driver and the DT node added to the >> meson-gx dtsi. I'll respin a v3 with the comments from Martin and Meson8 & Meson8b support ! Neil >> >> Changes since v1 at [1]: >> - fixed clock names >> - added summary in debugfs and moved indivudual clocks into a subdirectory >> - added the GX table to the match data >> >> Neil Armstrong (3): >> dt-bindings: amlogic: Add Internal Clock Measurer bindings >> soc: amlogic: Add Meson GX Clock Measure driver >> ARM64: dts: meson-gx: Add Internal Clock Measurer node >> >> .../bindings/soc/amlogic/clk-measure.txt | 15 + >> arch/arm64/boot/dts/amlogic/meson-gx.dtsi | 5 + >> drivers/soc/amlogic/Kconfig | 8 + >> drivers/soc/amlogic/Makefile | 1 + >> drivers/soc/amlogic/meson-gx-clk-measure.c | 293 ++++++++++++++++++ >> 5 files changed, 322 insertions(+) >> create mode 100644 Documentation/devicetree/bindings/soc/amlogic/clk-measure.txt >> create mode 100644 drivers/soc/amlogic/meson-gx-clk-measure.c >> > > For example, the debugfs summary looks like : > > # cat /sys/kernel/debug/meson-clk-msr/measure_summary > clock rate precision > --------------------------------------------- > ring_osc_out_ee_0 0 +/-3125Hz > ring_osc_out_ee_1 0 +/-3125Hz > ring_osc_out_ee_2 0 +/-3125Hz > a53_ring_osc 0 +/-3125Hz > gp0_pll 0 +/-3125Hz > enci 26998438 +/-3125Hz > clk81 166661458 +/-5208Hz > encp 0 +/-3125Hz > encl 0 +/-3125Hz > vdac 26998438 +/-3125Hz > rgmii_tx 0 +/-3125Hz > pdm 0 +/-3125Hz > amclk 0 +/-3125Hz > fec_0 0 +/-3125Hz > fec_1 0 +/-3125Hz > fec_2 0 +/-3125Hz > sys_pll_div16 0 +/-3125Hz > sys_cpu_div16 0 +/-3125Hz > hdmitx_sys 24000000 +/-3125Hz > rtc_osc_out 32813 +/-3125Hz > i2s_in_src0 0 +/-3125Hz > eth_phy_ref 0 +/-3125Hz > hdmi_todig 0 +/-3125Hz > sc_int 0 +/-3125Hz > sar_adc 1195313 +/-3125Hz > mpll_test_out 0 +/-3125Hz > vdec 0 +/-3125Hz > mali 0 +/-3125Hz > hdmi_tx_pixel 0 +/-3125Hz > i958 0 +/-3125Hz > vdin_meas 1484656250 +/-62500Hz > pcm_sclk 0 +/-3125Hz > pcm_mclk 0 +/-3125Hz > eth_rx_or_rmii 50000000 +/-3125Hz > mp0_out 0 +/-3125Hz > fclk_div5 0 +/-3125Hz > pwm_b 24000000 +/-3125Hz > pwm_a 0 +/-3125Hz > vpu 666625000 +/-20833Hz > ddr_dpll_pt 0 +/-3125Hz > mp1_out 0 +/-3125Hz > mp2_out 0 +/-3125Hz > mp3_out 0 +/-3125Hz > nand_core 24000000 +/-3125Hz > sd_emmc_b 0 +/-3125Hz > sd_emmc_a 0 +/-3125Hz > vid_pll_div_out 1484843750 +/-62500Hz > cci 0 +/-3125Hz > wave420l_c 0 +/-3125Hz > wave420l_b 0 +/-3125Hz > hcodec 0 +/-3125Hz > alt_32k 0 +/-3125Hz > gpio_msr 0 +/-3125Hz > hevc 0 +/-3125Hz > vid_lock 0 +/-3125Hz > pwm_f 0 +/-3125Hz > pwm_e 0 +/-3125Hz > pwm_d 23984375 +/-3125Hz > pwm_c 0 +/-3125Hz > aoclkx2_int 0 +/-3125Hz > aoclk_int 0 +/-3125Hz > rng_ring_osc_0 66746875 +/-3125Hz > rng_ring_osc_1 58442188 +/-3125Hz > rng_ring_osc_2 52098438 +/-3125Hz > rng_ring_osc_3 46662500 +/-3125Hz > vapb 249996094 +/-7812Hz > ge2d 249992188 +/-7812Hz > > On the AML-S905X-CC board. > > Neil >