From mboxrd@z Thu Jan 1 00:00:00 1970 From: Manivannan Sadhasivam Subject: [PATCH 01/10] dt-bindings: pinctrl: Add bindings for Actions S900 SoC Date: Sun, 18 Feb 2018 02:14:24 +0530 Message-ID: <20180217204433.3095-2-manivannan.sadhasivam@linaro.org> References: <20180217204433.3095-1-manivannan.sadhasivam@linaro.org> Return-path: In-Reply-To: <20180217204433.3095-1-manivannan.sadhasivam@linaro.org> Sender: linux-kernel-owner@vger.kernel.org To: linus.walleij@linaro.org, robh+dt@kernel.org, afaerber@suse.de Cc: liuwei@actions-semi.com, mp-cs@actions-semi.com, 96boards@ucrobotics.com, devicetree@vger.kernel.org, daniel.thompson@linaro.org, amit.kucheria@linaro.org, linux-arm-kernel@lists.infradead.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, Manivannan Sadhasivam List-Id: devicetree@vger.kernel.org Add pinctrl bindings for Actions Semi S900 SoC Signed-off-by: Manivannan Sadhasivam --- .../bindings/pinctrl/actions,s900-pinctrl.txt | 171 +++++++++++++++++++++ 1 file changed, 171 insertions(+) create mode 100644 Documentation/devicetree/bindings/pinctrl/actions,s900-pinctrl.txt diff --git a/Documentation/devicetree/bindings/pinctrl/actions,s900-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/actions,s900-pinctrl.txt new file mode 100644 index 000000000000..ee7d3ecd9bd9 --- /dev/null +++ b/Documentation/devicetree/bindings/pinctrl/actions,s900-pinctrl.txt @@ -0,0 +1,171 @@ +Actions Semi S900 Pin Controller + +This binding describes the pin controller found in the S900 SoC. + +Required Properties: + +- compatible: Should be "actions,s900-pinctrl" +- reg: Should contain the register base address and size of + the pin controller. +- clocks: phandle of the clock feeding the pin controller + +Please refer to pinctrl-bindings.txt in this directory for details of the +common pinctrl bindings used by client devices, including the meaning of the +phrase "pin configuration node". + +The pin configuration nodes act as a container for an arbitrary number of +subnodes. Each of these subnodes represents some desired configuration for a +pin, a group, or a list of pins or groups. This configuration can include the +mux function to select on those group(s), and various pin configuration +parameters, such as pull-up, drive strength, etc. + +PIN CONFIGURATION NODES: + +The name of each subnode is not important; all subnodes should be enumerated +and processed purely based on their content. + +Each subnode only affects those parameters that are explicitly listed. In +other words, a subnode that lists a mux function but no pin configuration +parameters implies no information about any pin configuration parameters. +Similarly, a pin subnode that describes a pullup parameter implies no +information about e.g. the mux function. + +Pinmux functions are available only for the pin groups while pinconf +parameters are available for both pin groups and individual pins. + +The following generic properties as defined in pinctrl-bindings.txt are valid +to specify in a pin configuration subnode: + +Required Properties: + +- pins: An array of strings, each string containing the name of a pin. + These pins are used for selecting the pull control and schmitt + trigger parameters. The following are the list of pins + available: + + ETH_TXD0, ETH_TXD1, ETH_TXEN, ETH_RXER, ETH_CRS_DV, + ETH_RXD1, ETH_RXD0, ETH_REF_CLK, ETH_MDC, ETH_MDIO, + SIRQ0, SIRQ1, SIRQ2, I2S_D0, I2S_BCLK0, I2S_LRCLK0, + I2S_MCLK0, I2S_D1, I2S_BCLK1, I2S_LRCLK1, I2S_MCLK1, + PCM1_IN, PCM1_CLK, PCM1_SYNC, PCM1_OUT, ERAM_A5, + ERAM_A6, ERAM_A7, ERAM_A8, ERAM_A9, ERAM_A10, ERAM_A11, + LVDS_OEP, LVDS_OEN, LVDS_ODP, LVDS_ODN, LVDS_OCP, + LVDS_OCN, LVDS_OBP, LVDS_OBN, LVDS_OAP, LVDS_OAN, + LVDS_EEP, LVDS_EEN, LVDS_EDP, LVDS_EDN, LVDS_ECP, + LVDS_ECN, LVDS_EBP, LVDS_EBN, LVDS_EAP, LVDS_EAN, + SD0_D0, SD0_D1, SD0_D2, SD0_D3, SD1_D0, SD1_D1, + SD1_D2, SD1_D3, SD0_CMD, SD0_CLK, SD1_CMD, SD1_CLK, + SPI0_SCLK, SPI0_SS, SPI0_MISO, SPI0_MOSI, UART0_RX, + UART0_TX, UART2_RX, UART2_TX, UART2_RTSB, UART2_CTSB, + UART3_RX, UART3_TX, UART3_RTSB, UART3_CTSB, UART4_RX, + UART4_TX, I2C0_SCLK, I2C0_SDATA, I2C1_SCLK, I2C1_SDATA, + I2C2_SCLK, I2C2_SDATA, CSI0_DN0, CSI0_DP0, CSI0_DN1, + CSI0_DP1, CSI0_CN, CSI0_CP, CSI0_DN2, CSI0_DP2, CSI0_DN3, + CSI0_DP3, DSI_DP3, DSI_DN3, DSI_DP1, DSI_DN1, DSI_CP, + DSI_CN, DSI_DP0, DSI_DN0, DSI_DP2, DSI_DN2, SENSOR0_PCLK, + CSI1_DN0,CSI1_DP0,CSI1_DN1, CSI1_DP1, CSI1_CN, CSI1_CP, + SENSOR0_CKOUT, NAND0_D0, NAND0_D1, NAND0_D2, NAND0_D3, + NAND0_D4, NAND0_D5, NAND0_D6, NAND0_D7, NAND0_DQS, + NAND0_DQSN, NAND0_ALE, NAND0_CLE, NAND0_CEB0, NAND0_CEB1, + NAND0_CEB2, NAND0_CEB3, NAND1_D0, NAND1_D1, NAND1_D2, + NAND1_D3, NAND1_D4, NAND1_D5, NAND1_D6, NAND1_D7, NAND1_DQS, + NAND1_DQSN, NAND1_ALE, NAND1_CLE, NAND1_CEB0, NAND1_CEB1, + NAND1_CEB2, NAND1_CEB3, SGPIO0, SGPIO1, SGPIO2, SGPIO3 + +- groups: An array of strings, each string containing the name of a pin + group. These pin groups are used for selecting the pinmux + functions. The following are the list of pin groups available: + + mfp0_22, mfp0_21_20_eth_mdc, mfp0_21_20_eth_mdio, + mfp0_19_sirq0, mfp0_19_sirq1, mfp0_18_16_eth_txd0, + mfp0_18_16_eth_txd1, mfp0_15_13_eth_txen, mfp0_15_13_eth_rxer, + mfp0_12_11, mfp0_10_8_eth_rxd1, mfp0_10_8_eth_rxd0, mfp0_7_6, + mfp0_5_i2s_d0, mfp0_5_i2s_d1, mfp0_4_3, mfp0_2_i2s0, + mfp0_2_i2s1, mfp0_1_0_pcm1_in_out, mfp0_1_0_pcm1_clk, + mfp0_1_0_pcm1_sync, mfp1_31_29_eram_a5, mfp1_31_29_eram_a6, + mfp1_31_29_eram_a7, mfp1_28_26_eram_a8, mfp1_28_26_eram_a9, + mfp1_28_26_eram_a10, mfp1_25_23, mfp1_22_lvds_oep_odn, + mfp1_22_lvds_ocp_obn, mfp1_22_lvds_oap_oan, mfp1_21_lvds_e, + mfp1_5_4, mfp1_3_1_spi0_ss, mfp1_3_1_spi0_miso, mfp2_23, + mfp2_22, mfp2_21, mfp2_20, mfp2_19_17, mfp2_16_14, mfp2_13_11, + mfp2_10_9, mfp2_8_7, mfp2_6_5, mfp2_4_3, mfp2_2_0, mfp3_27, + mfp3_21_19, mfp3_18_16, mfp3_15, mfp3_14, mfp3_13, + mfp3_12_dsi_dp3_dn1, mfp3_12_dsi_cp_dn0, mfp3_12_dsi_dp2_dn2, + mfp3_11, mfp3_10_nand1_ceb3, mfp3_10_nand1_ceb0, mfp3_9, + mfp3_8 + + These pin groups are used for selecting the drive strength + parameters. + + drv0_31_30, drv0_29_28, drv0_27_26, drv0_25_24, drv0_23_22, + drv0_21_20, drv0_19_18, drv0_17_16, drv0_15_14, drv0_13_12, + drv0_11_10, drv0_9_8, drv0_7_6, drv0_5_4, drv0_3_2, drv0_1_0, + drv1_29_28, drv1_27_26, drv1_25_24, drv1_23_22, drv1_21_20, + drv1_19_18, drv1_17_16, drv1_15_14, drv1_13_12, drv1_11_10, + drv1_9_8, drv1_7_6, drv1_5_4, drv2_31_30, drv2_29_28, + drv2_27_26, drv2_21_20 + + These pin groups are used for selecting the slew rate + parameters. + + sr0_15, sr0_14, sr0_13, sr0_12, sr0_11, sr0_10, sr0_9, sr0_8, + sr0_7, sr0_6, sr0_5, sr0_4, sr0_3, sr0_2, sr0_1, sr0_0, + sr1_25, sr1_24, sr1_23, sr1_22, sr1_21, sr1_20, sr1_19, + sr1_18, sr2_31, sr2_30, sr2_29, sr2_25 + +- function: An array of strings, each string containing the name of the + pinmux functions. These functions can only be selected by + the corresponding pin groups. The following are the list of + pinmux functions available: + + eram, eth_rmii, eth_smii, spi0, spi1, spi2, spi3, sens0, + uart0, uart1, uart2, uart3, uart4, uart5, uart6, i2s0, i2s1, + pcm0, pcm1, jtag, pwm0, pwm1, pwm2, pwm3, pwm4, pwm5, sd0, + sd1, sd2, sd3, i2c0, i2c1, i2c2, i2c3, i2c4, i2c5, lvds, + usb30, usb20, gpu, mipi_csi0, mipi_csi1, mipi_dsi, nand0, + nand1, spdif, sirq0, sirq1, sirq2 + +Optional Properties: + +- bias-bus-hold: No arguments. The specified pins should retain the previous + state value. +- bias-high-impedance: No arguments. The specified pins should be configured + as high impedance. +- bias-pull-down: No arguments. The specified pins should be configued as + pull down. +- bias-pull-up: No arguments. The specified pins should be configued as + pull up. +- input-schmitt-enable: No arguments: Enable schmitt trigger for the specified + pins +- input-schmitt-disable: No arguments: Disable schmitt trigger for the specified + pins +- slew-rate: Integer. Sets slew rate for the specified pins. + Valid values are: + <0> - Slow + <1> - Fast +- drive-strength: Integer. Selects the drive strength for the specified + pins. + Valid values are: + <2> - mA + <4> - mA + <8> - mA + <12> - mA + +Example: + + pinctrl: pinctrl@e01b0000 { + compatible = "actions,s900-pinctrl"; + reg = <0x0 0xe01b0000 0x0 0x1000>; + clocks = <&cmu CLK_GPIO>; + + uart2-default: uart2-default { + pinmux { + groups = "mfp1_22_lvds_oep_odn"; + function = "uart2"; + }; + pinconf { + groups = "drv1_27_26"; + drive-strength = <12>; + }; + }; + }; -- 2.14.1