Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753619AbbLFQWs (ORCPT ); Sun, 6 Dec 2015 11:22:48 -0500 Received: from relay2-d.mail.gandi.net ([217.70.183.194]:40141 "EHLO relay2-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753183AbbLFQWr (ORCPT ); Sun, 6 Dec 2015 11:22:47 -0500 X-Originating-IP: 81.57.43.44 From: Remi Pommarel To: Stephen Warren , Eric Anholt , Lee Jones , Michael Turquette , Stephen Boyd , Rob Herring Cc: linux-rpi-kernel@lists.infradead.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, Remi Pommarel Subject: [PATCH v3 0/4] Add PWM clock support for bcm2835 Date: Sun, 6 Dec 2015 17:22:45 +0100 Message-Id: <1449418969-5565-1-git-send-email-repk@triplefau.lt> X-Mailer: git-send-email 2.0.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1788 Lines: 46 Hi, This patchset adds support for pwm clock. At boot, this clock does not have a default parent nor a default rate set. Thus we should be able to change its parent to get this clock working. The current clock implementation is using a mux to select the parent, but these clocks need to add a password (0x5a) in higher register bits when changing parent. So a generic mux cannot be used here. The two first patches fix the clock parent selection, while the last ones are actually adding the pwm clock registration. Changes since v1: - determine_rate now based its parent selection upon divided rate instead of the parent one - bcm2835_clock_choose_div has been modified to produce an avarage rate lower or equal to the requested one - devicetree modifications have removed to be send in another patch Changes since v2: - Remove useless variable and include - Make bcm2835_clock_choose_div() divisor round up ability optional - Set rate in bcm2835_determine_rate() - Add device tree modification in a separate patch Remi Pommarel (4): clk: bcm2835: add a round up ability to the clock divisor clk: bcm2835: Support for clock parent selection clk: bcm2835: Add PWM clock support clk: bcm2835: Add PWM clock support to the device tree arch/arm/boot/dts/bcm2835-rpi.dtsi | 4 + arch/arm/boot/dts/bcm2835.dtsi | 9 +++ drivers/clk/bcm/clk-bcm2835.c | 155 +++++++++++++++++++++++------------- include/dt-bindings/clock/bcm2835.h | 3 +- 4 files changed, 116 insertions(+), 55 deletions(-) -- 2.0.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/