From patchwork Mon Mar 23 17:52:30 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sowjanya Komatineni X-Patchwork-Id: 210493 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=-9.9 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable 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 25735C54FCF for ; Mon, 23 Mar 2020 17:53:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 021CA2072E for ; Mon, 23 Mar 2020 17:53:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="VnDozmx8" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727673AbgCWRwl (ORCPT ); Mon, 23 Mar 2020 13:52:41 -0400 Received: from hqnvemgate26.nvidia.com ([216.228.121.65]:15190 "EHLO hqnvemgate26.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726986AbgCWRwl (ORCPT ); Mon, 23 Mar 2020 13:52:41 -0400 Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqnvemgate26.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Mon, 23 Mar 2020 10:52:26 -0700 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Mon, 23 Mar 2020 10:52:39 -0700 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Mon, 23 Mar 2020 10:52:39 -0700 Received: from HQMAIL111.nvidia.com (172.20.187.18) by HQMAIL111.nvidia.com (172.20.187.18) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Mon, 23 Mar 2020 17:52:39 +0000 Received: from hqnvemgw03.nvidia.com (10.124.88.68) by HQMAIL111.nvidia.com (172.20.187.18) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Mon, 23 Mar 2020 17:52:39 +0000 Received: from skomatineni-linux.nvidia.com (Not Verified[10.2.160.78]) by hqnvemgw03.nvidia.com with Trustwave SEG (v7, 5, 8, 10121) id ; Mon, 23 Mar 2020 10:52:39 -0700 From: Sowjanya Komatineni To: , , , , , CC: , , , , , , Subject: [RFC PATCH v5 4/9] clk: tegra: Add Tegra210 CSI TPG clock gate Date: Mon, 23 Mar 2020 10:52:30 -0700 Message-ID: <1584985955-19101-5-git-send-email-skomatineni@nvidia.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1584985955-19101-1-git-send-email-skomatineni@nvidia.com> References: <1584985955-19101-1-git-send-email-skomatineni@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1584985946; bh=OGs3CNdnpPztJ28S1nwc0JHJg2nXou6ljJssqTIUQtQ=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:X-NVConfidentiality:MIME-Version: Content-Type; b=VnDozmx8MyAuMN2X66e3c8VMfk8zDGOCgd6a/JlZ34lB19gtQshhPtEZsbGGr49cP I9ZQ8mREItmblekPjAp63x4rgXtNDA1OBm5y8R4nKLeWG44I3nlkEL5fGw+VqCLc1M 7HJ6Mi3Sg3EgSvkoyh3olVApUqqFvStvvR369lRctNfe7qCmwf2R8ctTGL9vJHiHuZ 3+lnTo+JO2pqsILcq/fAbxRKNOzRTnzS7M1/EWUNfSzTHeAY0njyFtxhIKS/WDz4Sj Z/vR9hmh5fK1hknUocmwuT/Ru6sepUh98AWWY0V20rEIfTVLmr6wYwTi2vDs8BAiI1 mWwA4mIsyy4Iw== Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Tegra210 CSI hardware internally uses PLLD for internal test pattern generator logic. PLLD_BASE register in CAR has a bit CSI_CLK_SOURCE to enable PLLD out to CSI during TPG mode. This patch adds this CSI TPG clock gate to Tegra210 clock driver to allow Tegra video driver to ungate CSI TPG clock during TPG mode and gate during non TPG mode. Acked-by: Stephen Boyd Signed-off-by: Sowjanya Komatineni --- drivers/clk/tegra/clk-tegra210.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/clk/tegra/clk-tegra210.c b/drivers/clk/tegra/clk-tegra210.c index c6304f5..58a67c7 100644 --- a/drivers/clk/tegra/clk-tegra210.c +++ b/drivers/clk/tegra/clk-tegra210.c @@ -3035,6 +3035,13 @@ static __init void tegra210_periph_clk_init(void __iomem *clk_base, periph_clk_enb_refcnt); clks[TEGRA210_CLK_DSIB] = clk; + /* csi_tpg */ + clk = clk_register_gate(NULL, "csi_tpg", "pll_d_out0", + CLK_SET_RATE_PARENT, clk_base + PLLD_BASE, + 23, 0, &pll_d_lock); + clk_register_clkdev(clk, "csi_tpg", NULL); + clks[TEGRA210_CLK_CSI_TPG] = clk; + /* la */ clk = tegra_clk_register_periph("la", la_parents, ARRAY_SIZE(la_parents), &tegra210_la, clk_base,