path: root/arch/arm/boot/dts/imx6q-pinfunc.h
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2014-02-09ARM: dts: imx: pinfunc: add MX6QDL_PAD_GPIO_6__ENET_IRQTroy Kisky
From "Chip Errata for the i.MX 6Dual/6Quad" ERR006687 ENET: Only the ENET wake-up interrupt request can wake the system from Wait mode. The ENET block generates many interrupts. Only one of these interrupt lines is connected to the General Power Controller (GPC) block, but a logical OR of all of the ENET interrupts is connected to the General Interrupt Controller (GIC). When the system enters Wait mode, a normal RX Done or TX Done does not wake up the system because the GPC cannot see this interrupt. This impacts performance of the ENET block because its interrupts are serviced only when the chip exits Wait mode due to an interrupt from some other wake-up source. Adding MX6QDL_PAD_GPIO_6__ENET_IRQ is the 1st step to workaround this problem. The input reg is set to 0x3c to set IOMUX_OBSRV_MUX1 to ENET_IRQ. The mux reg value is 0x11, so that the observable mux is routed to this pin and to the gpio controller(sion bit). These magic values come from Ranjani Vaidyanathan's patch: "ENGR00257847-1 MX6Q/DL-Fix Ethernet performance issue when WAIT mode is active" Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com> CC: Ranjani Vaidyanathan <ra5478@freescale.com> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2014-02-09ARM: dts: imx: pinfunc: add MX6QDL_PAD_SD1_CLK__OSC32K_32K_OUTTroy Kisky
The solo/duallite reference manual does not mention this setting, but it works. Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2013-09-26ARM: dts: imx6q: add quirky select input for USB_OTG_IDShawn Guo
For some reason, the select input of pin function USB_OTG_ID is not implemented via a regular select input register but using the bit USB_OTG_ID_ SEL (shift 13) of IOMUXC_GPR1 register (offset 0x4). As per the workaround for such quirk implemented in pinctrl driver, we need to compose the input_val cell as below. 31 23 15 7 0 | 0xff | shift | width | select | Thus, we have 0xff0d0100 for MX6QDL_PAD_ENET_RX_ER__USB_OTG_ID and 0xff0d0101 for MX6QDL_PAD_GPIO_1__USB_OTG_ID in input_val cell. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Tested-by: Peter Chen <peter.chen@freescale.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-17ARM: dts: imx6q: fix the wrong offset of the Pad Mux registerHuang Shijie
The patch "0b7a76a ARM: dts: imx6q{dl}: add DTE pads for uart" adds the DTE pads for uart. For PAD_EIM_D29, the offset of the Pad Mux register should be 0x0c8, not 0x0c4. This patch fixes it. Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2013-08-22ARM: dts: imx: share pad macro names between imx6q and imx6dlShawn Guo
The imx6q and imx6dl are two pin-to-pin compatible SoCs. The same board design can work with either chip plugged into the socket, e.g. sabresd and sabreauto boards. We currently define pin groups in imx6q.dtsi and imx6dl.dtsi respectively because the pad macro names are different between two chips. This brings a maintenance burden on having the same label point to the same pin group defined in two places. The patch replaces prefix MX6Q_ and MX6DL_ with MX6QDL_ for both SoCs pad macro names. Then the pin groups becomes completely common between imx6q and imx6dl and can just be moved into imx6qdl.dtsi, so that the long term maintenance of imx6q/dt pin settings becomes easier. Unfortunately, the change brings some dramatic diff stat, but it's all about DTS file, and the ultimate net diff stat is good. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2013-08-22ARM: dts: imx6q{dl}: add DTE pads for uartHuang Shijie
The uart2 in the imx6q-arm2 board is used as a DTE uart, this patch adds the necessary DTE pads for uart2. Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2013-04-09pinctrl: imx: move hard-coding data into device treeShawn Guo
Currently, all imx pinctrl drivers maintain a big array of struct imx_pin_reg which hard-codes data like register offset and mux mode setting for each pin function. Every time a new imx SoC support is added, we need to add such a big mount of data. With moving to single kernel build, it's only matter of time to be blamed on memory consuming. With DTC pre-processor support in place, the patch moves all these data into device tree by redefining the PIN_FUNC_ID in imxXX-pinfunc.h and changing the PIN_FUNC_ID parsing code a little bit. The pin id gets re-numbered based on mux register offset, or config register offset if the pin has no mux register, so that kernel can identify the pin id from register offsets provided by device tree. As a bonus point of the change, those arbitrary magic numbers standing for particular PIN_FUNC_ID in device tree sources are now replaced by macros to improve the readability of dts files. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Dong Aisheng <dong.aisheng@linaro.org> Acked-by: Linus Walleij <linus.walleij@linaro.org>