Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933366AbcLMOWA (ORCPT ); Tue, 13 Dec 2016 09:22:00 -0500 Received: from mx07-00178001.pphosted.com ([62.209.51.94]:19620 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932515AbcLMOV4 (ORCPT ); Tue, 13 Dec 2016 09:21:56 -0500 From: To: Rob Herring , Mark Rutland , Russell King , Maxime Coquelin , Alexandre Torgue , Michael Turquette , Stephen Boyd , Nicolas Pitre , Arnd Bergmann , , , CC: , , , , , , , , Subject: [PATCH v4 1/9] clk: stm32f4: Update DT bindings documentation Date: Tue, 13 Dec 2016 15:20:12 +0100 Message-ID: <1481638820-29324-2-git-send-email-gabriel.fernandez@st.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1481638820-29324-1-git-send-email-gabriel.fernandez@st.com> References: <1481638820-29324-1-git-send-email-gabriel.fernandez@st.com> MIME-Version: 1.0 Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2016-12-13_11:,, signatures=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3176 Lines: 104 From: Gabriel Fernandez Creation of dt include file for specific stm32f4 clocks. These specific clocks are not derived from system clock (SYSCLOCK) We should use index 1 to use these clocks in DT. e.g. <&rcc 1 CLK_LSI> Signed-off-by: Gabriel Fernandez Acked-by: Rob Herring --- .../devicetree/bindings/clock/st,stm32-rcc.txt | 17 ++++++++++ include/dt-bindings/clock/stm32fx-clock.h | 39 ++++++++++++++++++++++ 2 files changed, 56 insertions(+) create mode 100644 include/dt-bindings/clock/stm32fx-clock.h diff --git a/Documentation/devicetree/bindings/clock/st,stm32-rcc.txt b/Documentation/devicetree/bindings/clock/st,stm32-rcc.txt index 0532d81..8f19d87 100644 --- a/Documentation/devicetree/bindings/clock/st,stm32-rcc.txt +++ b/Documentation/devicetree/bindings/clock/st,stm32-rcc.txt @@ -17,6 +17,9 @@ Required properties: property, containing a phandle to the clock device node, an index selecting between gated clocks and other clocks and an index specifying the clock to use. +- clocks: External oscillator clock phandle + - high speed external clock signal (HSE) + - external I2S clock (I2S_CKIN) Example: @@ -25,6 +28,7 @@ Example: #clock-cells = <2> compatible = "st,stm32f42xx-rcc", "st,stm32-rcc"; reg = <0x40023800 0x400>; + clocks = <&clk_hse>, <&clk_i2s_ckin>; }; Specifying gated clocks @@ -66,6 +70,19 @@ The secondary index is bound with the following magic numbers: 0 SYSTICK 1 FCLK + 2 CLK_LSI (low-power clock source) + 3 CLK_LSE (generated from a 32.768 kHz low-speed external + crystal or ceramic resonator) + 4 CLK_HSE_RTC (HSE division factor for RTC clock) + 5 CLK_RTC (real-time clock) + 6 PLL_VCO_I2S (vco frequency of I2S pll) + 7 PLL_VCO_SAI (vco frequency of SAI pll) + 8 CLK_LCD (LCD-TFT) + 9 CLK_I2S (I2S clocks) + 10 CLK_SAI1 (audio clocks) + 11 CLK_SAI2 + 12 CLK_I2SQ_PDIV (post divisor of pll i2s q divisor) + 13 CLK_SAIQ_PDIV (post divisor of pll sai q divisor) Example: diff --git a/include/dt-bindings/clock/stm32fx-clock.h b/include/dt-bindings/clock/stm32fx-clock.h new file mode 100644 index 0000000..08bcab6 --- /dev/null +++ b/include/dt-bindings/clock/stm32fx-clock.h @@ -0,0 +1,39 @@ +/* + * stm32fx-clock.h + * + * Copyright (C) 2016 STMicroelectronics + * Author: Gabriel Fernandez for STMicroelectronics. + * License terms: GNU General Public License (GPL), version 2 + */ + +/* + * List of clocks wich are not derived from system clock (SYSCLOCK) + * + * The index of these clocks is the secondary index of DT bindings + * (see Documentatoin/devicetree/bindings/clock/st,stm32-rcc.txt) + * + * e.g: + ; +*/ + +#ifndef _DT_BINDINGS_CLK_STMFX_H +#define _DT_BINDINGS_CLK_STMFX_H + +#define SYSTICK 0 +#define FCLK 1 +#define CLK_LSI 2 +#define CLK_LSE 3 +#define CLK_HSE_RTC 4 +#define CLK_RTC 5 +#define PLL_VCO_I2S 6 +#define PLL_VCO_SAI 7 +#define CLK_LCD 8 +#define CLK_I2S 9 +#define CLK_SAI1 10 +#define CLK_SAI2 11 +#define CLK_I2SQ_PDIV 12 +#define CLK_SAIQ_PDIV 13 + +#define END_PRIMARY_CLK 14 + +#endif -- 1.9.1