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ARM: tegra: dts: add aliases and DMA requestor for serial controller
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Add APB DMA requestor and serial aliases for serial controller.
There will be two serial driver i.e. 8250 based simple serial driver
and APB DMA based serial driver for higher baudrate and performace.

The simple serial driver get enabled with compatible nvidia,tegra20-uart
and APB DMA based driver will get enabled with compatible
nvidia,tegra20-hsuart.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
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Laxman Dewangan authored and Stephen Warren committed Jan 28, 2013
1 parent 35f210e commit b6551bb
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Showing 2 changed files with 51 additions and 10 deletions.
30 changes: 25 additions & 5 deletions arch/arm/boot/dts/tegra20.dtsi
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,14 @@
compatible = "nvidia,tegra20";
interrupt-parent = <&intc>;

aliases {
serial0 = &uarta;
serial1 = &uartb;
serial2 = &uartc;
serial3 = &uartd;
serial4 = &uarte;
};

host1x {
compatible = "nvidia,tegra20-host1x", "simple-bus";
reg = <0x50000000 0x00024000>;
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status = "disabled";
};

serial@70006000 {
/*
* There are two serial driver i.e. 8250 based simple serial
* driver and APB DMA based serial driver for higher baudrate
* and performace. To enable the 8250 based driver, the compatible
* is "nvidia,tegra20-uart" and to enable the APB DMA based serial
* driver, the comptible is "nvidia,tegra20-hsuart".
*/
uarta: serial@70006000 {
compatible = "nvidia,tegra20-uart";
reg = <0x70006000 0x40>;
reg-shift = <2>;
interrupts = <0 36 0x04>;
nvidia,dma-request-selector = <&apbdma 8>;
clocks = <&tegra_car 6>;
status = "disabled";
};

serial@70006040 {
uartb: serial@70006040 {
compatible = "nvidia,tegra20-uart";
reg = <0x70006040 0x40>;
reg-shift = <2>;
interrupts = <0 37 0x04>;
nvidia,dma-request-selector = <&apbdma 9>;
clocks = <&tegra_car 96>;
status = "disabled";
};

serial@70006200 {
uartc: serial@70006200 {
compatible = "nvidia,tegra20-uart";
reg = <0x70006200 0x100>;
reg-shift = <2>;
interrupts = <0 46 0x04>;
nvidia,dma-request-selector = <&apbdma 10>;
clocks = <&tegra_car 55>;
status = "disabled";
};

serial@70006300 {
uartd: serial@70006300 {
compatible = "nvidia,tegra20-uart";
reg = <0x70006300 0x100>;
reg-shift = <2>;
interrupts = <0 90 0x04>;
nvidia,dma-request-selector = <&apbdma 19>;
clocks = <&tegra_car 65>;
status = "disabled";
};

serial@70006400 {
uarte: serial@70006400 {
compatible = "nvidia,tegra20-uart";
reg = <0x70006400 0x100>;
reg-shift = <2>;
interrupts = <0 91 0x04>;
nvidia,dma-request-selector = <&apbdma 20>;
clocks = <&tegra_car 66>;
status = "disabled";
};
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31 changes: 26 additions & 5 deletions arch/arm/boot/dts/tegra30.dtsi
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,14 @@
compatible = "nvidia,tegra30";
interrupt-parent = <&intc>;

aliases {
serial0 = &uarta;
serial1 = &uartb;
serial2 = &uartc;
serial3 = &uartd;
serial4 = &uarte;
};

host1x {
compatible = "nvidia,tegra30-host1x", "simple-bus";
reg = <0x50000000 0x00024000>;
Expand Down Expand Up @@ -213,47 +221,60 @@
0x70003000 0x3e4>; /* Mux registers */
};

serial@70006000 {
/*
* There are two serial driver i.e. 8250 based simple serial
* driver and APB DMA based serial driver for higher baudrate
* and performace. To enable the 8250 based driver, the compatible
* is "nvidia,tegra30-uart", "nvidia,tegra20-uart" and to enable
* the APB DMA based serial driver, the comptible is
* "nvidia,tegra30-hsuart", "nvidia,tegra20-hsuart".
*/
uarta: serial@70006000 {
compatible = "nvidia,tegra30-uart", "nvidia,tegra20-uart";
reg = <0x70006000 0x40>;
reg-shift = <2>;
interrupts = <0 36 0x04>;
nvidia,dma-request-selector = <&apbdma 8>;
clocks = <&tegra_car 6>;
status = "disabled";
};

serial@70006040 {
uartb: serial@70006040 {
compatible = "nvidia,tegra30-uart", "nvidia,tegra20-uart";
reg = <0x70006040 0x40>;
reg-shift = <2>;
interrupts = <0 37 0x04>;
nvidia,dma-request-selector = <&apbdma 9>;
clocks = <&tegra_car 160>;
status = "disabled";
};

serial@70006200 {
uartc: serial@70006200 {
compatible = "nvidia,tegra30-uart", "nvidia,tegra20-uart";
reg = <0x70006200 0x100>;
reg-shift = <2>;
interrupts = <0 46 0x04>;
nvidia,dma-request-selector = <&apbdma 10>;
clocks = <&tegra_car 55>;
status = "disabled";
};

serial@70006300 {
uartd: serial@70006300 {
compatible = "nvidia,tegra30-uart", "nvidia,tegra20-uart";
reg = <0x70006300 0x100>;
reg-shift = <2>;
interrupts = <0 90 0x04>;
nvidia,dma-request-selector = <&apbdma 19>;
clocks = <&tegra_car 65>;
status = "disabled";
};

serial@70006400 {
uarte: serial@70006400 {
compatible = "nvidia,tegra30-uart", "nvidia,tegra20-uart";
reg = <0x70006400 0x100>;
reg-shift = <2>;
interrupts = <0 91 0x04>;
nvidia,dma-request-selector = <&apbdma 20>;
clocks = <&tegra_car 66>;
status = "disabled";
};
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