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Merged
merged 3 commits into from
Jan 10, 2020
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drivers: spi: Add basic Gecko SPI driver #20194

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d4231b1
drivers: spi: Add Gecko SPI driver
chrta Oct 28, 2019
e4dd8f5
boards: efr32mg_sltb004a: Add support for spi nor flash
chrta Oct 28, 2019
2a1c8c7
boards: efr32_slwstk6061a: Add support for spi nor flash
chrta Nov 11, 2019
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10 changes: 10 additions & 0 deletions boards/arm/efr32_slwstk6061a/doc/index.rst
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Expand Up @@ -69,6 +69,8 @@ The efr32_slwstk6061a board configuration supports the following hardware featur
| UART | on-chip | serial port-polling; |
| | | serial port-interrupt |
+-----------+------------+-------------------------------------+
| SPI(M) | on-chip | spi port-polling |
+-----------+------------+-------------------------------------+

The default configuration can be found in the defconfig file:

Expand Down Expand Up @@ -103,6 +105,14 @@ means Pin number 2 on PORTA, as used in the board's datasheets and manuals.
+-------+-------------+-------------------------------------+
| PA1 | USART0_RX | UART Console EFM_BC_RX US0_RX #0 |
+-------+-------------+-------------------------------------+
| PC6 | SPI_MOSI | Flash MOSI US1_TX #11 |
+-------+-------------+-------------------------------------+
| PC7 | SPI_MISO | Flash MISO US1_RX #11 |
+-------+-------------+-------------------------------------+
| PC8 | SPI_SCLK | Flash SCLK US1_CLK #11 |
+-------+-------------+-------------------------------------+
| PA4 | SPI_CS | Flash Chip Select (GPIO) |
+-------+-------------+-------------------------------------+

System Clock
============
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25 changes: 25 additions & 0 deletions boards/arm/efr32_slwstk6061a/efr32_slwstk6061a.dts
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Expand Up @@ -66,6 +66,31 @@
status = "okay";
};

&usart1 {
compatible = "silabs,gecko-spi-usart";

#address-cells = <1>;
#size-cells = <0>;

location-rx = <GECKO_LOCATION(11) GECKO_PORT_C GECKO_PIN(7)>;
location-tx = <GECKO_LOCATION(11) GECKO_PORT_C GECKO_PIN(6)>;
location-clk = <GECKO_LOCATION(11) GECKO_PORT_C GECKO_PIN(8)>;

cs-gpios = <&gpioa 4 0>;

status = "okay";

mx25r80: mx25r8035f@0 {
compatible = "jedec,spi-nor";
label = "MX25R8035F";
reg = <0>;
spi-max-frequency = <80000000>;
size = <0x800000>;
has-be32k;
jedec-id = [c2 28 14];
};
};

&rtcc0 {
prescaler = <1>;
status = "okay";
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1 change: 1 addition & 0 deletions boards/arm/efr32_slwstk6061a/efr32_slwstk6061a.yaml
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Expand Up @@ -11,6 +11,7 @@ toolchain:
supported:
- gpio
- nvs
- spi
testing:
ignore_tags:
- net
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3 changes: 3 additions & 0 deletions boards/arm/efr32mg_sltb004a/Kconfig.defconfig
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Expand Up @@ -25,6 +25,9 @@ config GPIO_GECKO_PORTD
config GPIO_GECKO_PORTF
default y

config GPIO_GECKO_PORTK
default y

endif # GPIO_GECKO

if COUNTER
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10 changes: 10 additions & 0 deletions boards/arm/efr32mg_sltb004a/doc/index.rst
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Expand Up @@ -76,6 +76,8 @@ The efr32mg_sltb004a board configuration supports the following hardware feature
+-----------+------------+-------------------------------------+
| I2C | on-chip | i2c port-polling |
+-----------+------------+-------------------------------------+
| SPI(M) | on-chip | spi port-polling |
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@dbkinder dbkinder Oct 28, 2019 •
edited
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What's the significance of the (M) notation? Master? Can this just be SPI or if the M is important it should be explained?

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@chrta chrta Oct 29, 2019

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Yes, it means master. Slave-mode is not implemented by this driver. I copied the notation from https://docs.zephyrproject.org/latest/boards/arm/nrf52840_pca10059/doc/index.html#supported-features which contains SPI (M/S).
I do not know what the preferred way for this is. I can also remove the (M).

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@dbkinder dbkinder Nov 1, 2019

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If you think technical folks will know what this means, then it's OK by me. Otherwise, maybe say ```SPI Master`` to be clear.

+-----------+------------+-------------------------------------+

The default configuration can be found in the defconfig file:
``boards/arm/efr32mg_sltb004a/efr32mg_sltb004a_defconfig``.
Expand Down Expand Up @@ -119,6 +121,14 @@ in the board's and microcontroller's datasheets and manuals.
+------+-------------+-----------------------------------+
| PC5 | I2C_SCL | ENV_I2C_SCL I2C1_SCL #17 |
+------+-------------+-----------------------------------+
| PK0 | SPI_MOSI | Flash MOSI US2_TX #29 |
+------+-------------+-----------------------------------+
| PK2 | SPI_MISO | Flash MISO US2_RX #30 |
+------+-------------+-----------------------------------+
| PF7 | SPI_SCLK | Flash SCLK US2_CLK #18 |
+------+-------------+-----------------------------------+
| PK1 | SPI_CS | Flash Chip Select (GPIO) |
+------+-------------+-----------------------------------+

System Clock
============
Expand Down
25 changes: 25 additions & 0 deletions boards/arm/efr32mg_sltb004a/efr32mg_sltb004a.dts
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Expand Up @@ -63,6 +63,31 @@
status = "okay";
};

&usart2 {
compatible = "silabs,gecko-spi-usart";

#address-cells = <1>;
#size-cells = <0>;

location-rx = <GECKO_LOCATION(30) GECKO_PORT_K GECKO_PIN(2)>;
location-tx = <GECKO_LOCATION(29) GECKO_PORT_K GECKO_PIN(0)>;
location-clk = <GECKO_LOCATION(18) GECKO_PORT_F GECKO_PIN(7)>;

cs-gpios = <&gpiok 1 0>;

status = "okay";

mx25r80: mx25r8035f@0 {
compatible = "jedec,spi-nor";
label = "MX25R8035F";
reg = <0>;
spi-max-frequency = <80000000>;
size = <0x800000>;
has-be32k;
jedec-id = [c2 28 14];
};
};

&leuart0 {
current-speed = <9600>;
location-rx = <GECKO_LOCATION(27) GECKO_PORT_F GECKO_PIN(4)>;
Expand Down
1 change: 1 addition & 0 deletions boards/arm/efr32mg_sltb004a/efr32mg_sltb004a.yaml
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Expand Up @@ -12,6 +12,7 @@ supported:
- gpio
- i2c
- nvs
- spi
testing:
ignore_tags:
- net
Expand Down
1 change: 1 addition & 0 deletions drivers/spi/CMakeLists.txt
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Expand Up @@ -18,5 +18,6 @@ zephyr_library_sources_ifdef(CONFIG_NRFX_SPIS spi_nrfx_spis.c)
zephyr_library_sources_ifdef(CONFIG_SPI_LITESPI spi_litespi.c)
zephyr_library_sources_ifdef(CONFIG_SPI_OC_SIMPLE spi_oc_simple.c)
zephyr_library_sources_ifdef(CONFIG_SPI_XEC_QMSPI spi_xec_qmspi.c)
zephyr_library_sources_ifdef(CONFIG_SPI_GECKO spi_gecko.c)

zephyr_library_sources_ifdef(CONFIG_USERSPACE spi_handlers.c)
2 changes: 2 additions & 0 deletions drivers/spi/Kconfig
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Expand Up @@ -244,4 +244,6 @@ source "drivers/spi/Kconfig.oc_simple"

source "drivers/spi/Kconfig.xec_qmspi"

source "drivers/spi/Kconfig.gecko"

endif # SPI
14 changes: 14 additions & 0 deletions drivers/spi/Kconfig.gecko
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@@ -0,0 +1,14 @@
# Kconfig.gecko - Gecko SPI configuration option
#
# Copyright (c) 2019 Christian Taedcke <[email protected]>
#
# SPDX-License-Identifier: Apache-2.0
#

menuconfig SPI_GECKO
bool "Gecko SPI controller driver"
depends on HAS_SILABS_GECKO
depends on GPIO_GECKO
select SOC_GECKO_USART
help
Enable the SPI peripherals on Gecko
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