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a=ed25519-sha256; t=1711980406; l=5540; i=j.neuschaefer@gmx.net; s=20240329; h=from:subject:message-id; bh=QPzdQUVDkB9QA3Xv6+gOkAHNqMRKKV6HeNLuZ6QtTHg=; b=aELc8e1LxZHvhFng8A7HIeehmO0xMUKmyP9dfbaEhVHrinX1fJ0JQnqArOdOYhpwAiX8L3mr9 XzPlWbluUZwDtAa3iWD9xajGSSLeUoT2yl7LS0KO2pBIYks4fiIba6R X-Developer-Key: i=j.neuschaefer@gmx.net; a=ed25519; pk=NIe0bK42wNaX/C4bi6ezm7NJK0IQE+8MKBm7igFMIS4= X-Provags-ID: V03:K1:S9so0wpYCtcZ/lkABhTBPtdLAFziUGm7uUQVLAJijyzK+yReS7d Egnptog85PlgsAqCRH4WPrFSZ+485sp7I7HPOztvcJpvN011+z0akd9YZKPhBEBNfIESnZn r9wNvkUzDg1b5pIVilnYT5rLE77/hCKUTp2+W50873H5mKb5eszL3J/ftm0sNabOubg2e1v nXOgr+Qg2t1n0mRKXnvQw== X-Spam-Flag: NO UI-OutboundReport: notjunk:1;M01:P0:F41cuxMVn6Q=;O5+yG+BX7rvVudCXMrI26NPViVR zu1i/VVWdWb1lHknMR9LtNBrFyFOMLlAfPjX2BVtduYzzZfE305q7f3geixwCEHqCKw0WicA4 EO0Mq5wLSnma397Mb7aImrL6ebgJlo6bF5AZxRhxku8c60VTHo208rkxyReczMmzL9NKrG45a D/0Y+r47SFY65DqjKNYPB0H6wJ0FHqLekOI5B4pDhX54TOctEgfLICWQiSA2EZEdkomRC+X63 webXhDJRrusSJ9lwR4vuTyjsSxD3wcAihhuIq6AG75/QgXAsGfJj7B3zXuc874GT5sl7Tnzxq uu6slKfFmB63UloGE7FL2tyRpn8v51jUP89OGCrMbcoNzU3HQKlaX6ryxnkz5rpUvjGg12cA9 OtwP1uQLdQ6TEe5PJy6c+L5CsGIfSMQ+OOZRdodUF2THsayyqyC9wqE/pgMyQlgaHDoShPpkH n063njOmtokAClIdQCGgHDoqVcNMhIE8IDf9bprE31s8k52Yk3sanuEwFuJebik9Szxh1QWJf AdlWWCbJ2akh1b6KSmwIao0EciDcM7dSE71a4Ry/bGNuTf2DwIYsKqWLW+J8oWNPi+tjgpgH7 LgtIwLCB2Jg+miZJ0cWz2ZtxJeHGTN1JZrgCta+fdroHYyof+lRcnAYhLlD+RNrTmyxfe2WZO MXODXPS2EQNWc1JcaJaSM4BKapzlOUkTrmKLoS3dJAzEH5oDtFljF3f+QqInCQmI3XHZmcCG8 rOk+yYfoi35E+UjhoOXkRG09i7MniG6cdCeDXJRyHhMphWTukXlZ+ygFymr8spQ4FcP11SA1V HBNrFwSjgnokqT7R+8OZZiYqWFeOZHiHX3ZRhMUzRXoKL0ZPJ7EPlmURAhrhCVoWd0 X-BeenThere: openbmc@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development list for OpenBMC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Rob Herring , Conor Dooley , Philipp Zabel , Stephen Boyd , Michael Turquette , linux-kernel@vger.kernel.org, =?utf-8?q?Jonathan_Neusch=C3=A4fer?= , Krzysztof Kozlowski , Joel Stanley , Krzysztof Kozlowski Errors-To: openbmc-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "openbmc" The Nuvoton WPCM450 SoC has a combined clock and reset controller. Add a devicetree binding for it, as well as definitions for the bit numbers used by it. Signed-off-by: Jonathan Neuschäfer Reviewed-by: Krzysztof Kozlowski --- v10-v11: - no changes v9: - Remove clock-output-names in example, because it's now unnecessary due to driver improvements v5-v8: - no changes v4: - https://lore.kernel.org/lkml/20220610072141.347795-4-j.neuschaefer@gmx.net/ - Add R-b tag v3: - Change clock-output-names and clock-names from "refclk" to "ref", suggested by Krzysztof Kozlowski v2: - https://lore.kernel.org/lkml/20220429172030.398011-5-j.neuschaefer@gmx.net/ - Various improvements, suggested by Krzysztof Kozlowski v1: - https://lore.kernel.org/lkml/20220422183012.444674-5-j.neuschaefer@gmx.net/ --- .../bindings/clock/nuvoton,wpcm450-clk.yaml | 65 +++++++++++++++++++++ include/dt-bindings/clock/nuvoton,wpcm450-clk.h | 67 ++++++++++++++++++++++ 2 files changed, 132 insertions(+) -- 2.43.0 diff --git a/Documentation/devicetree/bindings/clock/nuvoton,wpcm450-clk.yaml b/Documentation/devicetree/bindings/clock/nuvoton,wpcm450-clk.yaml new file mode 100644 index 00000000000000..93521cf68a040f --- /dev/null +++ b/Documentation/devicetree/bindings/clock/nuvoton,wpcm450-clk.yaml @@ -0,0 +1,65 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/clock/nuvoton,wpcm450-clk.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Nuvoton WPCM450 clock controller + +maintainers: + - Jonathan Neuschäfer + +description: + The clock controller of the Nuvoton WPCM450 SoC supplies clocks and resets to + the rest of the chip. + +properties: + compatible: + const: nuvoton,wpcm450-clk + + reg: + maxItems: 1 + + clocks: + items: + - description: Reference clock oscillator (should be 48 MHz) + + clock-names: + items: + - const: ref + + '#clock-cells': + const: 1 + + '#reset-cells': + const: 1 + +additionalProperties: false + +required: + - compatible + - reg + - clocks + - clock-names + - '#clock-cells' + +examples: + - | + #include + #include + + refclk: clock-48mhz { + /* 48 MHz reference oscillator */ + compatible = "fixed-clock"; + clock-frequency = <48000000>; + #clock-cells = <0>; + }; + + clk: clock-controller@b0000200 { + reg = <0xb0000200 0x100>; + compatible = "nuvoton,wpcm450-clk"; + clocks = <&refclk>; + clock-names = "ref"; + #clock-cells = <1>; + #reset-cells = <1>; + }; diff --git a/include/dt-bindings/clock/nuvoton,wpcm450-clk.h b/include/dt-bindings/clock/nuvoton,wpcm450-clk.h new file mode 100644 index 00000000000000..86e1c895921b71 --- /dev/null +++ b/include/dt-bindings/clock/nuvoton,wpcm450-clk.h @@ -0,0 +1,67 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ + +#ifndef _DT_BINDINGS_CLOCK_NUVOTON_WPCM450_CLK_H +#define _DT_BINDINGS_CLOCK_NUVOTON_WPCM450_CLK_H + +/* Clocks based on CLKEN bits */ +#define WPCM450_CLK_FIU 0 +#define WPCM450_CLK_XBUS 1 +#define WPCM450_CLK_KCS 2 +#define WPCM450_CLK_SHM 4 +#define WPCM450_CLK_USB1 5 +#define WPCM450_CLK_EMC0 6 +#define WPCM450_CLK_EMC1 7 +#define WPCM450_CLK_USB0 8 +#define WPCM450_CLK_PECI 9 +#define WPCM450_CLK_AES 10 +#define WPCM450_CLK_UART0 11 +#define WPCM450_CLK_UART1 12 +#define WPCM450_CLK_SMB2 13 +#define WPCM450_CLK_SMB3 14 +#define WPCM450_CLK_SMB4 15 +#define WPCM450_CLK_SMB5 16 +#define WPCM450_CLK_HUART 17 +#define WPCM450_CLK_PWM 18 +#define WPCM450_CLK_TIMER0 19 +#define WPCM450_CLK_TIMER1 20 +#define WPCM450_CLK_TIMER2 21 +#define WPCM450_CLK_TIMER3 22 +#define WPCM450_CLK_TIMER4 23 +#define WPCM450_CLK_MFT0 24 +#define WPCM450_CLK_MFT1 25 +#define WPCM450_CLK_WDT 26 +#define WPCM450_CLK_ADC 27 +#define WPCM450_CLK_SDIO 28 +#define WPCM450_CLK_SSPI 29 +#define WPCM450_CLK_SMB0 30 +#define WPCM450_CLK_SMB1 31 + +/* Other clocks */ +#define WPCM450_CLK_USBPHY 32 + +#define WPCM450_NUM_CLKS 33 + +/* Resets based on IPSRST bits */ +#define WPCM450_RESET_FIU 0 +#define WPCM450_RESET_EMC0 6 +#define WPCM450_RESET_EMC1 7 +#define WPCM450_RESET_USB0 8 +#define WPCM450_RESET_USB1 9 +#define WPCM450_RESET_AES_PECI 10 +#define WPCM450_RESET_UART 11 +#define WPCM450_RESET_MC 12 +#define WPCM450_RESET_SMB2 13 +#define WPCM450_RESET_SMB3 14 +#define WPCM450_RESET_SMB4 15 +#define WPCM450_RESET_SMB5 16 +#define WPCM450_RESET_PWM 18 +#define WPCM450_RESET_TIMER 19 +#define WPCM450_RESET_ADC 27 +#define WPCM450_RESET_SDIO 28 +#define WPCM450_RESET_SSPI 29 +#define WPCM450_RESET_SMB0 30 +#define WPCM450_RESET_SMB1 31 + +#define WPCM450_NUM_RESETS 32 + +#endif /* _DT_BINDINGS_CLOCK_NUVOTON_WPCM450_CLK_H */