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ARM: dts: da850: Add ti,da830-uart compatible for serial ports 

TI DA8xx/OMAPL13x/AM17xx/AM18xx SoCs have extra UART registers beyond
the standard 8250 registers, so we need a new compatible string to
indicate this. Also, at least one of these registers uses the full 32
bits, so we need to specify reg-io-width in addition to reg-shift.

"ns16550a" is left in the compatible specification since it does work
as long as the bootloader configures the SoC UART power management
registers.

Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
This commit is contained in:
David Lechner 2017-01-05 12:54:19 -06:00 committed by Sekhar Nori
parent 5280bc3ed7
commit 3b6e9da8ab
1 changed files with 6 additions and 3 deletions
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arch/arm/boot/dts/da850.dtsi
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@ -277,22 +277,25 @@ edma1_tptc0: tptc@238000 {
interrupt-names = "edm3_tcerrint";
};
serial0: serial@42000 {
compatible = "ns16550a";
compatible = "ti,da830-uart", "ns16550a";
reg = <0x42000 0x100>;
reg-io-width = <4>;
reg-shift = <2>;
interrupts = <25>;
status = "disabled";
};
serial1: serial@10c000 {
compatible = "ns16550a";
compatible = "ti,da830-uart", "ns16550a";
reg = <0x10c000 0x100>;
reg-io-width = <4>;
reg-shift = <2>;
interrupts = <53>;
status = "disabled";
};
serial2: serial@10d000 {
compatible = "ns16550a";
compatible = "ti,da830-uart", "ns16550a";
reg = <0x10d000 0x100>;
reg-io-width = <4>;
reg-shift = <2>;
interrupts = <61>;
status = "disabled";