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=-5.0 required=3.0 tests=DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED,DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 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 70523C433DF for ; Mon, 25 May 2020 06:17:57 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E3E8B207DA for ; Mon, 25 May 2020 06:17:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="A7QCER12"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Ri27KJ57" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E3E8B207DA Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=alsa-devel-bounces@alsa-project.org Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 390FE16F2; Mon, 25 May 2020 08:17:05 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 390FE16F2 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1590387475; bh=+43PzMgJYllN1LAIC1RAsYP7m+86k9FimLgH4sDQ6As=; h=Date:From:To:Subject:References:In-Reply-To:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=A7QCER12skpiLffnT2GUxCKeFSlYVAEXUtfDKAKBA7+mdBN12yJa+1AdKmDnd0kYv 6pKQajOo1vpA2GYWFXDcms/N/Xkey2q5ZrEAYHn34D7tTnNaxI2ucJuOhq/OL2XGaJ BsXuLon0eqgNl+xqQ6uiHx4NmztJpYxq2VCXfpQY= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 685ABF8014E; Mon, 25 May 2020 08:17:04 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id A8D89F8016F; Mon, 25 May 2020 08:17:02 +0200 (CEST) Received: from mail-pj1-x1044.google.com (mail-pj1-x1044.google.com [IPv6:2607:f8b0:4864:20::1044]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 4E74BF80100 for ; Mon, 25 May 2020 08:16:55 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 4E74BF80100 Authentication-Results: alsa1.perex.cz; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Ri27KJ57" Received: by mail-pj1-x1044.google.com with SMTP id q24so8150869pjd.1 for ; Sun, 24 May 2020 23:16:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=1y4ds9zBC1SyppOslu2mLkxYcNHMS7bdeKWM7VoLVJM=; b=Ri27KJ57iDhs85zxL0RpQLEdYtlE2a3/aJma/2msgokrz+N411A+WrgmoubU77/pCl Yd8CtuzMQQZ9st9XfemTdl/UDK+Lg2y2aV0zsjqMoJbjiy2dgh2mSgMc1BI/S/ykes3y bnjRyoMAbybFPqi2XL/PoLK3RGacV1GBBnvZHLEElv8DAIpwmdKS2xMwU+uXmaZxKxrp azXyJBvjfpmt1G9WrzH6mgCWYVkGn6owSOkeU5ce18CWs9iujmuSPAWRB+XiD1xovLrk R+eCt1fDZtETLygzNUbhw8jyvId4OqGNVsZlEzfcx4PmA/PrHURT1ZljgOWcDxpndrWw FjqA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=1y4ds9zBC1SyppOslu2mLkxYcNHMS7bdeKWM7VoLVJM=; b=I3WfJJo/+I0u2kNloBaJ3wCyttWfktxsOkBdnGTfUgGqtFSgoTzFPz79F4gnwRwhsx nksdkk962clUnG/VDCy7jmRm3sT4x7oKSxC8gIPL+vXukB0RNbg6a+fz1KcR2QXg6UQB LtIYsdFa4XyaJ0GxrwLeaET7uPggYrH4/m+4T7bk3dOtbFwNhrd2ZkfA8DI6G0BSJR0g YZeeOCVxrL1ExGzyFFrD0HKlGdOrEY4EbL9sktPuv4VJ6qlJ+LybIQNyZ82CWAvWeukP sOvxlfCQVX4oCOam0g9aUgfA2Ur70T+li0mv8eV0tzArzebFZEEdszY3/m0Wb4NK8ioS 83cA== X-Gm-Message-State: AOAM530S6T80XWyLYaDG7K669inLM3mousD5Nwn9rv5GBcLJW803/Zep rbg0uyBMTzzv21j7KZjElWc= X-Google-Smtp-Source: ABdhPJyLnql6NYz3i6BDhhM9Z530+1CTHhFC5iBW0B2EeJA9dSWqab0WegzIfvg2UY2Fb/PuDkNTfg== X-Received: by 2002:a17:902:7787:: with SMTP id o7mr20963332pll.52.1590387412768; Sun, 24 May 2020 23:16:52 -0700 (PDT) Received: from Asurada (c-73-162-191-63.hsd1.ca.comcast.net. [73.162.191.63]) by smtp.gmail.com with ESMTPSA id o16sm3623730pgg.57.2020.05.24.23.16.51 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 24 May 2020 23:16:52 -0700 (PDT) Date: Sun, 24 May 2020 23:16:46 -0700 From: Nicolin Chen To: Shengjiu Wang Subject: Re: [PATCH] ASoC: fsl_asrc: Merge suspend/resume function to runtime_suspend/resume Message-ID: <20200525061645.GA12112@Asurada> References: <1590141444-28668-1-git-send-email-shengjiu.wang@nxp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1590141444-28668-1-git-send-email-shengjiu.wang@nxp.com> User-Agent: Mutt/1.5.22 (2013-10-16) Cc: alsa-devel@alsa-project.org, timur@kernel.org, Xiubo.Lee@gmail.com, linuxppc-dev@lists.ozlabs.org, tiwai@suse.com, lgirdwood@gmail.com, broonie@kernel.org, festevam@gmail.com, linux-kernel@vger.kernel.org X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" On Fri, May 22, 2020 at 05:57:24PM +0800, Shengjiu Wang wrote: > With dedicated power domain for asrc, power can be disabled after > probe and pm runtime suspend, then the value of all registers need to > be restored in pm runtime resume. So we can merge suspend/resume function > to runtime_suspend/resume function and enable regcache only in end of > probe. > > Signed-off-by: Shengjiu Wang Acked-by: Nicolin Chen 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=-4.8 required=3.0 tests=DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 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 C738BC433DF for ; Mon, 25 May 2020 06:18:23 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 701922071A for ; Mon, 25 May 2020 06:18:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Ri27KJ57" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 701922071A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 49Vn3105ZdzDqFS for ; Mon, 25 May 2020 16:18:21 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=gmail.com (client-ip=2607:f8b0:4864:20::641; helo=mail-pl1-x641.google.com; envelope-from=nicoleotsuka@gmail.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=Ri27KJ57; dkim-atps=neutral Received: from mail-pl1-x641.google.com (mail-pl1-x641.google.com [IPv6:2607:f8b0:4864:20::641]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 49Vn1P0GY1zDq5b for ; Mon, 25 May 2020 16:16:56 +1000 (AEST) Received: by mail-pl1-x641.google.com with SMTP id t16so7126922plo.7 for ; Sun, 24 May 2020 23:16:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=1y4ds9zBC1SyppOslu2mLkxYcNHMS7bdeKWM7VoLVJM=; b=Ri27KJ57iDhs85zxL0RpQLEdYtlE2a3/aJma/2msgokrz+N411A+WrgmoubU77/pCl Yd8CtuzMQQZ9st9XfemTdl/UDK+Lg2y2aV0zsjqMoJbjiy2dgh2mSgMc1BI/S/ykes3y bnjRyoMAbybFPqi2XL/PoLK3RGacV1GBBnvZHLEElv8DAIpwmdKS2xMwU+uXmaZxKxrp azXyJBvjfpmt1G9WrzH6mgCWYVkGn6owSOkeU5ce18CWs9iujmuSPAWRB+XiD1xovLrk R+eCt1fDZtETLygzNUbhw8jyvId4OqGNVsZlEzfcx4PmA/PrHURT1ZljgOWcDxpndrWw FjqA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=1y4ds9zBC1SyppOslu2mLkxYcNHMS7bdeKWM7VoLVJM=; b=NbM9xQ8WWryy98yAnUQ/5XVLxjswZAJQnh2zTMQhsCgJweyoZnCQJUsq0SeGZSODWG dM1HdydFwv0hPHlSVQTKRLJICFh0qLJZY7hgZMG67wl/xlGPhe58VhKmx3ssNKc3ur8c PGrV17kRgrdqqb99YoGE2Euk73tZBdOfG3dYLO9jjRg62zBULRWrxuoj9JO0vpDcoECz TPaE4FkeGZdpk3HCQmzMEs7PPZgubf2S8uNmM8bnZ//jY6zkwlRqqf9Rf6uQR/1Ulp1u Rh8rJJq4Pt2Xm8oMa79KMeTGd1uIFwAzyoxJLFaodLPsz9WZmH8vgY/CtogR1TdmEw17 mF4A== X-Gm-Message-State: AOAM531SExmYFSO24ob0xjqRb/saZS6XPZoi4gspZpJnlkplkKJNXI9q SHKtod7uhtnifAzwXvIBnMA= X-Google-Smtp-Source: ABdhPJyLnql6NYz3i6BDhhM9Z530+1CTHhFC5iBW0B2EeJA9dSWqab0WegzIfvg2UY2Fb/PuDkNTfg== X-Received: by 2002:a17:902:7787:: with SMTP id o7mr20963332pll.52.1590387412768; Sun, 24 May 2020 23:16:52 -0700 (PDT) Received: from Asurada (c-73-162-191-63.hsd1.ca.comcast.net. [73.162.191.63]) by smtp.gmail.com with ESMTPSA id o16sm3623730pgg.57.2020.05.24.23.16.51 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 24 May 2020 23:16:52 -0700 (PDT) Date: Sun, 24 May 2020 23:16:46 -0700 From: Nicolin Chen To: Shengjiu Wang Subject: Re: [PATCH] ASoC: fsl_asrc: Merge suspend/resume function to runtime_suspend/resume Message-ID: <20200525061645.GA12112@Asurada> References: <1590141444-28668-1-git-send-email-shengjiu.wang@nxp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1590141444-28668-1-git-send-email-shengjiu.wang@nxp.com> User-Agent: Mutt/1.5.22 (2013-10-16) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alsa-devel@alsa-project.org, timur@kernel.org, Xiubo.Lee@gmail.com, linuxppc-dev@lists.ozlabs.org, tiwai@suse.com, lgirdwood@gmail.com, perex@perex.cz, broonie@kernel.org, festevam@gmail.com, linux-kernel@vger.kernel.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Fri, May 22, 2020 at 05:57:24PM +0800, Shengjiu Wang wrote: > With dedicated power domain for asrc, power can be disabled after > probe and pm runtime suspend, then the value of all registers need to > be restored in pm runtime resume. So we can merge suspend/resume function > to runtime_suspend/resume function and enable regcache only in end of > probe. > > Signed-off-by: Shengjiu Wang Acked-by: Nicolin Chen 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=-5.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 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 D7780C433DF for ; Mon, 25 May 2020 06:16:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AFFA02071A for ; Mon, 25 May 2020 06:16:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Ri27KJ57" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730697AbgEYGQy (ORCPT ); Mon, 25 May 2020 02:16:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53436 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729985AbgEYGQx (ORCPT ); Mon, 25 May 2020 02:16:53 -0400 Received: from mail-pj1-x1042.google.com (mail-pj1-x1042.google.com [IPv6:2607:f8b0:4864:20::1042]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 59349C061A0E for ; Sun, 24 May 2020 23:16:53 -0700 (PDT) Received: by mail-pj1-x1042.google.com with SMTP id t8so6029788pju.3 for ; Sun, 24 May 2020 23:16:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=1y4ds9zBC1SyppOslu2mLkxYcNHMS7bdeKWM7VoLVJM=; b=Ri27KJ57iDhs85zxL0RpQLEdYtlE2a3/aJma/2msgokrz+N411A+WrgmoubU77/pCl Yd8CtuzMQQZ9st9XfemTdl/UDK+Lg2y2aV0zsjqMoJbjiy2dgh2mSgMc1BI/S/ykes3y bnjRyoMAbybFPqi2XL/PoLK3RGacV1GBBnvZHLEElv8DAIpwmdKS2xMwU+uXmaZxKxrp azXyJBvjfpmt1G9WrzH6mgCWYVkGn6owSOkeU5ce18CWs9iujmuSPAWRB+XiD1xovLrk R+eCt1fDZtETLygzNUbhw8jyvId4OqGNVsZlEzfcx4PmA/PrHURT1ZljgOWcDxpndrWw FjqA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=1y4ds9zBC1SyppOslu2mLkxYcNHMS7bdeKWM7VoLVJM=; b=j/2y4D3msYJT7JxdtW8sPGc2TjCBiZU1SD6xclodyedqLlcGg/8zWw+eN0+egxy2Xg hLN9m9kGQzfTa8b9D0G0HqQTc3bVG2kBc+Sjt2LOgDOeaZ13YQoQX30nGSPen55um6bZ t65+03Y/7WFcdiaxlhtyicOAGMs5F6HIbBKrOBcI0x8SU0Bx7kF3sPoW01I4jw1LMRkc 08TZmErTITP1Xx11VrzU5o86np5xu7xhqRpDm59E/iefmTFY6iWtnvMbYl1ToANfhXIz s6GLFOPyeu4WS6Bd663cnBo51YqgOi/S+8mxkP+I8g6qZkR2jT0jP8U+S2IerPHEM7Ne remQ== X-Gm-Message-State: AOAM531NZepTwrwBM7ql8hZggIT73iAKvljgjuSCfgJ4TomqCmfXQUJI R2TMqTTC0UTGRsnVAJyG06g= X-Google-Smtp-Source: ABdhPJyLnql6NYz3i6BDhhM9Z530+1CTHhFC5iBW0B2EeJA9dSWqab0WegzIfvg2UY2Fb/PuDkNTfg== X-Received: by 2002:a17:902:7787:: with SMTP id o7mr20963332pll.52.1590387412768; Sun, 24 May 2020 23:16:52 -0700 (PDT) Received: from Asurada (c-73-162-191-63.hsd1.ca.comcast.net. [73.162.191.63]) by smtp.gmail.com with ESMTPSA id o16sm3623730pgg.57.2020.05.24.23.16.51 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 24 May 2020 23:16:52 -0700 (PDT) Date: Sun, 24 May 2020 23:16:46 -0700 From: Nicolin Chen To: Shengjiu Wang Cc: timur@kernel.org, Xiubo.Lee@gmail.com, festevam@gmail.com, broonie@kernel.org, alsa-devel@alsa-project.org, lgirdwood@gmail.com, perex@perex.cz, tiwai@suse.com, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] ASoC: fsl_asrc: Merge suspend/resume function to runtime_suspend/resume Message-ID: <20200525061645.GA12112@Asurada> References: <1590141444-28668-1-git-send-email-shengjiu.wang@nxp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1590141444-28668-1-git-send-email-shengjiu.wang@nxp.com> User-Agent: Mutt/1.5.22 (2013-10-16) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, May 22, 2020 at 05:57:24PM +0800, Shengjiu Wang wrote: > With dedicated power domain for asrc, power can be disabled after > probe and pm runtime suspend, then the value of all registers need to > be restored in pm runtime resume. So we can merge suspend/resume function > to runtime_suspend/resume function and enable regcache only in end of > probe. > > Signed-off-by: Shengjiu Wang Acked-by: Nicolin Chen