From patchwork Fri Jul 10 09:16:02 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Liao X-Patchwork-Id: 6764051 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id CCCCEC05AC for ; Fri, 10 Jul 2015 09:19:56 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 07EDD204FF for ; Fri, 10 Jul 2015 09:19:56 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 36F07204D6 for ; Fri, 10 Jul 2015 09:19:55 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZDURd-0007lb-Bf; Fri, 10 Jul 2015 09:18:09 +0000 Received: from [210.61.82.184] (helo=mailgw02.mediatek.com) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZDURa-0007F1-GK; Fri, 10 Jul 2015 09:18:07 +0000 X-Listener-Flag: 11101 Received: from mtkhts09.mediatek.inc [(172.21.101.70)] by mailgw02.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 12341761; Fri, 10 Jul 2015 17:16:08 +0800 Received: from mtksdtcf04.mediatek.inc (10.21.12.144) by mtkhts09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 14.3.181.6; Fri, 10 Jul 2015 17:16:07 +0800 From: James Liao To: Matthias Brugger , Mike Turquette , Stephen Boyd , Heiko Stubner Subject: [PATCH 1/2] clk: mediatek: Add root clocks support for Mediatek SoC. Date: Fri, 10 Jul 2015 17:16:02 +0800 Message-ID: <1436519763-3195-2-git-send-email-jamesjj.liao@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1436519763-3195-1-git-send-email-jamesjj.liao@mediatek.com> References: <1436519763-3195-1-git-send-email-jamesjj.liao@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150710_021806_752123_CA456AE2 X-CRM114-Status: GOOD ( 15.86 ) X-Spam-Score: -1.1 (-) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, srv_heupstream@mediatek.com, James Liao , linux-kernel@vger.kernel.org, Daniel Kurtz , Ricky Liang , Rob Herring , linux-mediatek@lists.infradead.org, Sascha Hauer , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.8 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds root clocks support by using CCF fixed-rate clock implementation. Signed-off-by: James Liao --- drivers/clk/mediatek/clk-mtk.c | 23 +++++++++++++++++++++++ drivers/clk/mediatek/clk-mtk.h | 17 ++++++++++++++++- 2 files changed, 39 insertions(+), 1 deletion(-) diff --git a/drivers/clk/mediatek/clk-mtk.c b/drivers/clk/mediatek/clk-mtk.c index 18444ae..4ac80d3 100644 --- a/drivers/clk/mediatek/clk-mtk.c +++ b/drivers/clk/mediatek/clk-mtk.c @@ -49,6 +49,29 @@ err_out: return NULL; } +void mtk_clk_register_root_clks(const struct mtk_root_clk *clks, int num, + struct clk_onecell_data *clk_data) +{ + int i; + struct clk *clk; + + for (i = 0; i < num; i++) { + const struct mtk_root_clk *rc = &clks[i]; + + clk = clk_register_fixed_rate(NULL, rc->name, NULL, + CLK_IS_ROOT, rc->rate); + + if (IS_ERR(clk)) { + pr_err("Failed to register clk %s: %ld\n", + rc->name, PTR_ERR(clk)); + continue; + } + + if (clk_data) + clk_data->clks[rc->id] = clk; + } +} + void mtk_clk_register_factors(const struct mtk_fixed_factor *clks, int num, struct clk_onecell_data *clk_data) { diff --git a/drivers/clk/mediatek/clk-mtk.h b/drivers/clk/mediatek/clk-mtk.h index 9dda9d8..d8d8b06 100644 --- a/drivers/clk/mediatek/clk-mtk.h +++ b/drivers/clk/mediatek/clk-mtk.h @@ -25,6 +25,21 @@ #define MHZ (1000 * 1000) +struct mtk_root_clk { + int id; + const char *name; + unsigned long rate; +}; + +#define ROOT_CLK(_id, _name, _rate) { \ + .id = _id, \ + .name = _name, \ + .rate = _rate, \ + } + +void mtk_clk_register_root_clks(const struct mtk_root_clk *clks, + int num, struct clk_onecell_data *clk_data); + struct mtk_fixed_factor { int id; const char *name; @@ -41,7 +56,7 @@ struct mtk_fixed_factor { .div = _div, \ } -extern void mtk_clk_register_factors(const struct mtk_fixed_factor *clks, +void mtk_clk_register_factors(const struct mtk_fixed_factor *clks, int num, struct clk_onecell_data *clk_data); struct mtk_composite {