Compiler/TDA4VM: TDA4 SPI slave DMA configuration and interface function

haitao wang1

Part Number: TDA4VM

Tool/software: TI C/C++ Compiler

Hi ALL

Now our requirement is to use MCSPI0 as the slave mode to communicate with the MCU.
1. My configuration in dts is as follows:
main_spi0: spi@2100000 {
compatible = "ti,am654-mcspi","ti,omap4-mcspi";
reg = <0x0 0x2100000 0x0 0x400>;
interrupts = <GIC_SPI 184 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&k3_clks 137 1>;
power-domains = <&k3_pds 137 TI_SCI_PD_EXCLUSIVE>;
#address-cells = <0>;
#size-cells = <0>;
dmas = <&main_udmap 0xc500>, <&main_udmap 0x4500>;
dma-names = "tx0", "rx0";
spi-slave;
};

&main_spi0 {
pinctrl-names = "default";
pinctrl-0 = <&main_spi0_pins_default>;
// ti,pindir-d0-out-d1-in = <1>;

slave{
spi-slave;
compatible = "tda4,spi0";
// reg = <0x0>;
spi-tx-bus-width = <1>;
spi-rx-bus-width = <1>;
spi-max-frequency = <5000000>;
spi-cpha;
};
};

main_spi0_pins_default: main-spi0-pins-default {
pinctrl-single,pins = <
J721E_IOPAD(0x1c0, PIN_INPUT_PULLUP, 0) /* (AA2) SPI0_CS0 */
J721E_IOPAD(0x1c8, PIN_INPUT_PULLDOWN, 0) /* (AA1) SPI0_CLK */
J721E_IOPAD(0x1cc, PIN_INPUT_PULLUP, 0) /* (AB5) SPI0_D0 */
J721E_IOPAD(0x1d0, PIN_OUTPUT, 0) /* (AA3) SPI0_D1 */
>;
};
Please help to confirm if there is a problem with this dts configuration if you need to use slave mode.
The part marked in red. What is the interrupt number? Because I see this is the configuration in the SDK, but Page 6413 of the TRM document, MCSPI0_INTR_SPI_0 is 216. So I would like to ask how much the interrupt number should be configured?

2. Does MCSPI0 have a demo code as a slave mode?

over 4 years ago

0 haitao wang1 over 4 years ago

Prodigy 50 points

Now our requirement is set MCSPI0 to slave mode and communication with another IC

1.my configuration in dts:

main_spi0: spi@2100000 {
compatible = "ti,am654-mcspi","ti,omap4-mcspi";
reg = <0x0 0x2100000 0x0 0x400>;
interrupts = <GIC_SPI 184 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&k3_clks 137 1>;
power-domains = <&k3_pds 137 TI_SCI_PD_EXCLUSIVE>;
#address-cells = <0>;
#size-cells = <0>;
dmas = <&main_udmap 0xc500>, <&main_udmap 0x4500>;
dma-names = "tx0", "rx0";
spi-slave;
};

&main_spi0 {
pinctrl-names = "default";
pinctrl-0 = <&main_spi0_pins_default>;
// ti,pindir-d0-out-d1-in = <1>;

slave{
spi-slave;
compatible = "tda4,spi0";
// reg = <0x0>;
spi-tx-bus-width = <1>;
spi-rx-bus-width = <1>;
spi-max-frequency = <5000000>;
spi-cpha;
};
};

main_spi0_pins_default: main-spi0-pins-default {
pinctrl-single,pins = <
J721E_IOPAD(0x1c0, PIN_INPUT_PULLUP, 0) /* (AA2) SPI0_CS0 */
J721E_IOPAD(0x1c8, PIN_INPUT_PULLDOWN, 0) /* (AA1) SPI0_CLK */
J721E_IOPAD(0x1cc, PIN_INPUT_PULLUP, 0) /* (AB5) SPI0_D0 */
J721E_IOPAD(0x1d0, PIN_OUTPUT, 0) /* (AA3) SPI0_D1 */
>;
};

pls help us to confirm if we need use SPI slave mode ，above dts is correct or not？

2.“ interrupts = <GIC_SPI 184 IRQ_TYPE_LEVEL_HIGH>;”

what is the irq number，of above sentence，is 184，correct？Since I found the 184 is from SDK, but it is 216 from TRM spec. Page 6413.

3. Is there any Demo code for "MCSPI0 as Slave mode"

0 Keerthy J over 4 years ago in reply to haitao wang1

TI__Guru**** 162640 points

Hi,

There is NO support for SPI slave mode on TDA4. Only master mode is supported on the SDK.

Master mode support steps are captured in the e2e thread: e2e.ti.com/.../947437

Best Regards,
Keerthy