327456a79f
Almost certainly any sane board has the twl4030 has the I2C4 pins connected as those are needed for voltage control during idle. If the I2C4 lines are not properly muxed, any voltage scaling over I2C4 will fail. Let's mux those pins by default, the boards that are not using them can still configure things separately. Cc: Kevin Hilman <khilman@linaro.org> Cc: Nishanth Menon <nm@ti.com> Cc: Paul Walmsley <paul@pwsan.com> Cc: Tero Kristo <t-kristo@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
43 lines
1.3 KiB
Plaintext
43 lines
1.3 KiB
Plaintext
/*
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* Copyright (C) 2013 Linaro, Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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&twl {
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pinctrl-names = "default";
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pinctrl-0 = <&twl4030_pins &twl4030_vpins>;
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};
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&omap3_pmx_core {
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/*
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* On most OMAP3 platforms, the twl4030 IRQ line is connected
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* to the SYS_NIRQ line on OMAP. Therefore, configure the
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* defaults for the SYS_NIRQ pin here.
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*/
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twl4030_pins: pinmux_twl4030_pins {
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pinctrl-single,pins = <
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0x1b0 (PIN_INPUT_PULLUP | PIN_OFF_WAKEUPENABLE | MUX_MODE0) /* sys_nirq.sys_nirq */
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>;
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};
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};
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/*
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* If your board is not using the I2C4 pins with twl4030, then don't include
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* this file. For proper idle mode signaling with sys_clkreq and sys_off_mode
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* pins we need to configure I2C4, or else use the legacy sys_nvmode1 and
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* sys_nvmode2 signaling.
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*/
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&omap3_pmx_wkup {
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twl4030_vpins: pinmux_twl4030_vpins {
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pinctrl-single,pins = <
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OMAP3_WKUP_IOPAD(0x2a00, PIN_INPUT | MUX_MODE0) /* i2c4_scl.i2c4_scl */
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OMAP3_WKUP_IOPAD(0x2a02, PIN_INPUT | MUX_MODE0) /* i2c4_sda.i2c4_sda */
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OMAP3_WKUP_IOPAD(0x2a06, PIN_OUTPUT | MUX_MODE0) /* sys_clkreq.sys_clkreq */
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OMAP3_WKUP_IOPAD(0x2a18, PIN_OUTPUT | MUX_MODE0) /* sys_off_mode.sys_off_mode */
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>;
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};
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};
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