From patchwork Mon Jun 16 13:40:06 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alex Elder X-Patchwork-Id: 4359371 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 [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 9B318BEEAA for ; Mon, 16 Jun 2014 13:53:38 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id AD61D2025A for ; Mon, 16 Jun 2014 13:53:37 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id EE8FD2017D for ; Mon, 16 Jun 2014 13:53:35 +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 1WwXAA-0004dL-R5; Mon, 16 Jun 2014 13:41:30 +0000 Received: from mail-ig0-f182.google.com ([209.85.213.182]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WwX8z-0002Ws-CQ for linux-arm-kernel@lists.infradead.org; Mon, 16 Jun 2014 13:40:18 +0000 Received: by mail-ig0-f182.google.com with SMTP id a13so2929249igq.9 for ; Mon, 16 Jun 2014 06:39:55 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=io6thhJW2IPxeDO1dobJjU24JcDANUi7miIDs6nqCUM=; b=kwFMC1kKAM7aISThTyQfV+J8MVP3L3tMS6lw2IF+JvQ7pka4fdnSJT2fGh4FSMTKEw ZZGKo6yFpthBhFKRhjU+Eu2cjVsH3sCh5bwqsPb1YIyduTVkcZ0ve0QcKaZ//abrhYAW 5bwt63wMg0Mo62OtC7q7a6aCIH9fVf43GAiWcZE/pgd3vZo8ekZHI9EFJxuUsJM5rEJQ eVWNXZshtjKomukBm2dxKFbssrNtKTpvbYkrUgkr+cye13BkJu3pYreBHEHh4HLiUbPY +Zz8UJGrOJ32/7Js1Q4402MMpqyIVZMCPiljh+X/zhYcUYXNxNBXR0MThcl+lH7VSp8t QpVQ== X-Gm-Message-State: ALoCoQnb56zntev3quX0xUKBPDSIM6GeaaK7nUghyR2WMCd7Kd10BgfbLLdCPhunXnctZrTythqZ X-Received: by 10.43.125.199 with SMTP id gt7mr3075842icc.70.1402925995838; Mon, 16 Jun 2014 06:39:55 -0700 (PDT) Received: from localhost.localdomain (c-71-195-31-37.hsd1.mn.comcast.net. [71.195.31.37]) by mx.google.com with ESMTPSA id k20sm20775727igf.5.2014.06.16.06.39.54 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 16 Jun 2014 06:39:55 -0700 (PDT) From: Alex Elder To: mturquette@linaro.org, mporter@linaro.org, bcm@fixthebug.org Subject: [PATCH v6 6/7] clk: bcm281xx: define a bus clock Date: Mon, 16 Jun 2014 08:40:06 -0500 Message-Id: <1402926007-4436-7-git-send-email-elder@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1402926007-4436-1-git-send-email-elder@linaro.org> References: <1402926007-4436-1-git-send-email-elder@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140616_064017_483637_D89577B8 X-CRM114-Status: GOOD ( 12.35 ) X-Spam-Score: -0.7 (/) Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-2.9 required=5.0 tests=BAYES_00,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 Define the bus clock "bsc3_apb". This bus clock has to be managed using the CCU policy mechanism, so add the definitions required for that to the clock and its CCU. This one bus clock in particular is defined because it is needed by peripheral clock "bsc3". Our boot loader does not properly activate "bsc3_apb", and as a result, "bsc3" isn't able to function properly. With "bsc3_apb" specified as a prerequisite clock for "bsc3", the latter works correctly. For now only this one bus clock is defined, because it allows correct operation of "bsc3". Others can be added later as needed (and this patch serves to show how that's done). Signed-off-by: Alex Elder --- drivers/clk/bcm/clk-bcm281xx.c | 13 ++++++++++++- include/dt-bindings/clock/bcm281xx.h | 3 ++- 2 files changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/clk/bcm/clk-bcm281xx.c b/drivers/clk/bcm/clk-bcm281xx.c index 502a487..b937fc9 100644 --- a/drivers/clk/bcm/clk-bcm281xx.c +++ b/drivers/clk/bcm/clk-bcm281xx.c @@ -309,8 +309,17 @@ static struct peri_clk_data pwm_data = { .trig = TRIGGER(0x0afc, 15), }; +static struct bus_clk_data bsc3_apb_data = { + .policy = POLICY(0x0048, 4), + .gate = HW_SW_GATE(0x0484, 16, 0, 1), +}; + static struct ccu_data slave_ccu_data = { BCM281XX_CCU_COMMON(slave, SLAVE), + .policy = { + .enable = CCU_LVM_EN(0x0034, 0), + .control = CCU_POLICY_CTL(0x000c, 0, 1, 2), + }, .kona_clks = { [BCM281XX_SLAVE_CCU_UARTB] = KONA_CLK(slave, uartb, peri), @@ -329,9 +338,11 @@ static struct ccu_data slave_ccu_data = { [BCM281XX_SLAVE_CCU_BSC2] = KONA_CLK(slave, bsc2, peri), [BCM281XX_SLAVE_CCU_BSC3] = - KONA_CLK(slave, bsc3, peri), + KONA_CLK_PREREQ(slave, bsc3, peri, bsc3_apb), [BCM281XX_SLAVE_CCU_PWM] = KONA_CLK(slave, pwm, peri), + [BCM281XX_SLAVE_CCU_BSC3_APB] = + KONA_CLK(slave, bsc3_apb, bus), [BCM281XX_SLAVE_CCU_CLOCK_COUNT] = LAST_KONA_CLK, }, }; diff --git a/include/dt-bindings/clock/bcm281xx.h b/include/dt-bindings/clock/bcm281xx.h index a763460..99f4aad 100644 --- a/include/dt-bindings/clock/bcm281xx.h +++ b/include/dt-bindings/clock/bcm281xx.h @@ -72,6 +72,7 @@ #define BCM281XX_SLAVE_CCU_BSC2 7 #define BCM281XX_SLAVE_CCU_BSC3 8 #define BCM281XX_SLAVE_CCU_PWM 9 -#define BCM281XX_SLAVE_CCU_CLOCK_COUNT 10 +#define BCM281XX_SLAVE_CCU_BSC3_APB 10 +#define BCM281XX_SLAVE_CCU_CLOCK_COUNT 11 #endif /* _CLOCK_BCM281XX_H */