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[92.34.204.253]) by smtp.gmail.com with ESMTPSA id z5-20020a196505000000b0044a12b953f9sm581520lfb.45.2022.03.19.16.00.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 19 Mar 2022 16:00:49 -0700 (PDT) From: Linus Walleij To: Michael Turquette , Stephen Boyd Cc: linux-clk@vger.kernel.org, Ulf Hansson , Linus Walleij , devicetree@vger.kernel.org Subject: [PATCH 1/5 v2] dt-bindings: clock: u8500: Add clkout clock bindings Date: Sat, 19 Mar 2022 23:51:52 +0100 Message-Id: <20220319225156.1451636-2-linus.walleij@linaro.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220319225156.1451636-1-linus.walleij@linaro.org> References: <20220319225156.1451636-1-linus.walleij@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org This adds device tree bindings for the externally routed clocks CLKOUT1 and CLKOUT2 clocks found in the DB8500. Cc: Ulf Hansson Cc: devicetree@vger.kernel.org Signed-off-by: Linus Walleij --- ChangeLog v1->v2: - Push the description of the clock-cells down under the clock-cells subnode. - Add an example, as this was missing and requested. --- .../bindings/clock/stericsson,u8500-clks.yaml | 57 +++++++++++++++++++ include/dt-bindings/clock/ste-db8500-clkout.h | 17 ++++++ 2 files changed, 74 insertions(+) create mode 100644 include/dt-bindings/clock/ste-db8500-clkout.h diff --git a/Documentation/devicetree/bindings/clock/stericsson,u8500-clks.yaml b/Documentation/devicetree/bindings/clock/stericsson,u8500-clks.yaml index 9bc95a308477..2150307219a0 100644 --- a/Documentation/devicetree/bindings/clock/stericsson,u8500-clks.yaml +++ b/Documentation/devicetree/bindings/clock/stericsson,u8500-clks.yaml @@ -109,6 +109,25 @@ properties: additionalProperties: false + clkout-clock: + description: A subnode with three clock cells for externally routed clocks, + output clocks. These are two PRCMU-internal clocks that can be divided and + muxed out on the pads of the DB8500 SoC. + type: object + + properties: + '#clock-cells': + description: + The first cell indicates which output clock we are using, + possible values are 0 (CLKOUT1) and 1 (CLKOUT2). + The second cell indicates which clock we want to use as source, + possible values are 0 thru 7, see the defines for the different + source clocks. + The third cell is a divider, legal values are 1 thru 63. + const: 3 + + additionalProperties: false + required: - compatible - reg @@ -119,3 +138,41 @@ required: - smp-twd-clock additionalProperties: false + +examples: + - | + #include + clocks@8012 { + compatible = "stericsson,u8500-clks"; + reg = <0x8012f000 0x1000>, <0x8011f000 0x1000>, + <0x8000f000 0x1000>, <0xa03ff000 0x1000>, + <0xa03cf000 0x1000>; + + prcmu_clk: prcmu-clock { + #clock-cells = <1>; + }; + + prcc_pclk: prcc-periph-clock { + #clock-cells = <2>; + }; + + prcc_kclk: prcc-kernel-clock { + #clock-cells = <2>; + }; + + prcc_reset: prcc-reset-controller { + #reset-cells = <2>; + }; + + rtc_clk: rtc32k-clock { + #clock-cells = <0>; + }; + + smp_twd_clk: smp-twd-clock { + #clock-cells = <0>; + }; + + clkout_clk: clkout-clock { + #clock-cells = <3>; + }; + }; diff --git a/include/dt-bindings/clock/ste-db8500-clkout.h b/include/dt-bindings/clock/ste-db8500-clkout.h new file mode 100644 index 000000000000..ca07cb2bd1bc --- /dev/null +++ b/include/dt-bindings/clock/ste-db8500-clkout.h @@ -0,0 +1,17 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __STE_CLK_DB8500_CLKOUT_H__ +#define __STE_CLK_DB8500_CLKOUT_H__ + +#define DB8500_CLKOUT_1 0 +#define DB8500_CLKOUT_2 1 + +#define DB8500_CLKOUT_SRC_CLK38M 0 +#define DB8500_CLKOUT_SRC_ACLK 1 +#define DB8500_CLKOUT_SRC_SYSCLK 2 +#define DB8500_CLKOUT_SRC_LCDCLK 3 +#define DB8500_CLKOUT_SRC_SDMMCCLK 4 +#define DB8500_CLKOUT_SRC_TVCLK 5 +#define DB8500_CLKOUT_SRC_TIMCLK 6 +#define DB8500_CLKOUT_SRC_CLK009 7 + +#endif