diff options
| author | Tony Lindgren <tony@atomide.com> | 2018-03-20 08:13:38 -0700 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2018-03-20 08:13:38 -0700 |
| commit | 984c7706ff180e33096c57183435d925cb644576 (patch) | |
| tree | f381c2dc81463414073f7cb55191104800d61529 /arch/arm/boot | |
| parent | e5b9fd7bdeb5eeca2d80ebbf68dd687bb85d1574 (diff) | |
| download | linux-984c7706ff180e33096c57183435d925cb644576.tar.bz2 | |
ARM: dts: omap4-droid4: Configure uart1 pins
These are needed to use the n_gsm driver for TS 27.010 UART
multiplexing. Note that support for the OOB wake gpio is still
missing so the UART is not yet usable for n_gsm.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/boot')
| -rw-r--r-- | arch/arm/boot/dts/omap4-droid4-xt894.dts | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/omap4-droid4-xt894.dts b/arch/arm/boot/dts/omap4-droid4-xt894.dts index 33fc6f9f07b2..bdf73cbcec3a 100644 --- a/arch/arm/boot/dts/omap4-droid4-xt894.dts +++ b/arch/arm/boot/dts/omap4-droid4-xt894.dts @@ -553,6 +553,28 @@ >; }; + /* + * Note that the v3.0.8 stock userspace dynamically remuxes uart1 + * rts pin probably for PM purposes to PIN_INPUT_PULLUP | MUX_MODE7 + * when not used. If needed, we can add rts pin remux later based + * on power measurements. + */ + uart1_pins: pinmux_uart1_pins { + pinctrl-single,pins = < + /* 0x4a10013c mcspi1_cs2.uart1_cts ag23 */ + OMAP4_IOPAD(0x13c, PIN_INPUT_PULLUP | MUX_MODE1) + + /* 0x4a10013e mcspi1_cs3.uart1_rts ah23 */ + OMAP4_IOPAD(0x13e, MUX_MODE1) + + /* 0x4a100140 uart3_cts_rctx.uart1_tx f27 */ + OMAP4_IOPAD(0x140, PIN_OUTPUT | MUX_MODE1) + + /* 0x4a1001ca dpm_emu14.uart1_rx aa3 */ + OMAP4_IOPAD(0x1ca, PIN_INPUT_PULLUP | MUX_MODE2) + >; + }; + /* uart3_tx_irtx and uart3_rx_irrx */ uart3_pins: pinmux_uart3_pins { pinctrl-single,pins = < @@ -622,6 +644,17 @@ }; }; +/* + * As uart1 is wired to mdm6600 with rts and cts, we can use the cts pin for + * uart1 wakeirq. + */ +&uart1 { + pinctrl-names = "default"; + pinctrl-0 = <&uart1_pins>; + interrupts-extended = <&wakeupgen GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH + &omap4_pmx_core 0xfc>; +}; + &uart3 { interrupts-extended = <&wakeupgen GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH &omap4_pmx_core 0x17c>; |