From patchwork Wed Apr 3 14:40:37 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter De Schrijver X-Patchwork-Id: 2388221 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork1.kernel.org (Postfix) with ESMTP id 7BB233FD8C for ; Wed, 3 Apr 2013 14:56:25 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1UNP3u-0000qU-OV; Wed, 03 Apr 2013 14:53:18 +0000 Received: from hqemgate04.nvidia.com ([216.228.121.35]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UNOx7-0004oe-Pa for linux-arm-kernel@lists.infradead.org; Wed, 03 Apr 2013 14:46:20 +0000 Received: from hqnvupgp07.nvidia.com (Not Verified[216.228.121.13]) by hqemgate04.nvidia.com id ; Wed, 03 Apr 2013 07:46:09 -0700 Received: from hqemhub01.nvidia.com ([172.20.12.94]) by hqnvupgp07.nvidia.com (PGP Universal service); Wed, 03 Apr 2013 07:45:17 -0700 X-PGP-Universal: processed; by hqnvupgp07.nvidia.com on Wed, 03 Apr 2013 07:45:17 -0700 Received: from hqnvemgw01.nvidia.com (172.20.150.20) by hqemhub01.nvidia.com (172.20.150.30) with Microsoft SMTP Server id 8.3.298.1; Wed, 3 Apr 2013 07:46:09 -0700 Received: from thelma.nvidia.com (Not Verified[172.16.212.77]) by hqnvemgw01.nvidia.com with MailMarshal (v7,1,2,5326) id ; Wed, 03 Apr 2013 07:46:09 -0700 Received: from tbergstrom-lnx.nvidia.com (tbergstrom-lnx.nvidia.com [10.21.24.170]) by thelma.nvidia.com (8.13.8+Sun/8.8.8) with ESMTP id r33EgrO3022798; Wed, 3 Apr 2013 07:46:04 -0700 (PDT) From: Peter De Schrijver To: Peter De Schrijver Subject: [PATCH v9 03/14] clk: tegra: Add TEGRA_PLL_BYPASS flag Date: Wed, 3 Apr 2013 17:40:37 +0300 Message-ID: <1365000110-8916-4-git-send-email-pdeschrijver@nvidia.com> X-Mailer: git-send-email 1.7.7.rc0.72.g4b5ea.dirty In-Reply-To: <1365000110-8916-1-git-send-email-pdeschrijver@nvidia.com> References: <1365000110-8916-1-git-send-email-pdeschrijver@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130403_104618_027893_AEFFB465 X-CRM114-Status: GOOD ( 12.56 ) X-Spam-Score: -7.5 (-------) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-7.5 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/, high trust [216.228.121.35 listed in list.dnswl.org] 1.7 KHOP_BIG_TO_CC Sent to 10+ recipients instaed of Bcc or a list -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.0 SPF_PASS SPF: sender matches SPF record -2.3 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: Linus Walleij , Prashant Gaikwad , Russell King , Stephen Warren , devicetree-discuss@lists.ozlabs.org, Simon Glass , Thierry Reding , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, Rob Herring , Pritesh Raithatha , Grant Likely , Laxman Dewangan , Mike Turquette , Rob Landley , linux-tegra@vger.kernel.org, Andrew Chew , Rhyland Klein , linux-arm-kernel@lists.infradead.org, Hiroshi Doyu X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Not all PLLs in Tegra114 have a bypass bit. Adapt the common code to only use this bit when available. Signed-off-by: Peter De Schrijver --- drivers/clk/tegra/clk-pll.c | 12 ++++++++---- drivers/clk/tegra/clk.h | 2 ++ 2 files changed, 10 insertions(+), 4 deletions(-) diff --git a/drivers/clk/tegra/clk-pll.c b/drivers/clk/tegra/clk-pll.c index 3feefb1..4ee6d03 100644 --- a/drivers/clk/tegra/clk-pll.c +++ b/drivers/clk/tegra/clk-pll.c @@ -171,7 +171,8 @@ static void _clk_pll_enable(struct clk_hw *hw) clk_pll_enable_lock(pll); val = pll_readl_base(pll); - val &= ~PLL_BASE_BYPASS; + if (pll->flags & TEGRA_PLL_BYPASS) + val &= ~PLL_BASE_BYPASS; val |= PLL_BASE_ENABLE; pll_writel_base(val, pll); @@ -188,7 +189,9 @@ static void _clk_pll_disable(struct clk_hw *hw) u32 val; val = pll_readl_base(pll); - val &= ~(PLL_BASE_BYPASS | PLL_BASE_ENABLE); + if (pll->flags & TEGRA_PLL_BYPASS) + val &= ~PLL_BASE_BYPASS; + val &= ~PLL_BASE_ENABLE; pll_writel_base(val, pll); if (pll->flags & TEGRA_PLLM) { @@ -459,7 +462,7 @@ static unsigned long clk_pll_recalc_rate(struct clk_hw *hw, val = pll_readl_base(pll); - if (val & PLL_BASE_BYPASS) + if ((pll->flags & TEGRA_PLL_BYPASS) && (val & PLL_BASE_BYPASS)) return parent_rate; if ((pll->flags & TEGRA_PLL_FIXED) && !(val & PLL_BASE_OVERRIDE)) { @@ -671,6 +674,7 @@ struct clk *tegra_clk_register_pll(const char *name, const char *parent_name, struct tegra_clk_pll *pll; struct clk *clk; + pll_flags |= TEGRA_PLL_BYPASS; pll = _tegra_init_pll(clk_base, pmc, fixed_rate, pll_params, pll_flags, freq_table, lock); if (IS_ERR(pll)) @@ -692,8 +696,8 @@ struct clk *tegra_clk_register_plle(const char *name, const char *parent_name, { struct tegra_clk_pll *pll; struct clk *clk; - pll_flags |= TEGRA_PLL_LOCK_MISC; + pll_flags |= TEGRA_PLL_LOCK_MISC | TEGRA_PLL_BYPASS; pll = _tegra_init_pll(clk_base, pmc, fixed_rate, pll_params, pll_flags, freq_table, lock); if (IS_ERR(pll)) diff --git a/drivers/clk/tegra/clk.h b/drivers/clk/tegra/clk.h index b9691dd..fff520a 100644 --- a/drivers/clk/tegra/clk.h +++ b/drivers/clk/tegra/clk.h @@ -184,6 +184,7 @@ struct tegra_clk_pll_params { * TEGRA_PLLE_CONFIGURE - Configure PLLE when enabling. * TEGRA_PLL_LOCK_MISC - Lock bit is in the misc register instead of the * base register. + * TEGRA_PLL_BYPASS - PLL has bypass bit */ struct tegra_clk_pll { struct clk_hw hw; @@ -213,6 +214,7 @@ struct tegra_clk_pll { #define TEGRA_PLL_FIXED BIT(6) #define TEGRA_PLLE_CONFIGURE BIT(7) #define TEGRA_PLL_LOCK_MISC BIT(8) +#define TEGRA_PLL_BYPASS BIT(9) extern const struct clk_ops tegra_clk_pll_ops; extern const struct clk_ops tegra_clk_plle_ops;