Commit Graph

10 Commits

Author SHA1 Message Date
Mohamed ElShahawi f9e0fa9af3 drivers: esp32/clock_control: support UART, I2C
- Change default CPU Clock to 240MHz
(PLL is activated)
- I2C, UART will use sysclk from clock driver
- esp32_enable_peripheral replaced by
clock_control_on

Signed-off-by: Mohamed ElShahawi <ExtremeGTX@hotmail.com>
2020-06-16 09:00:51 -05:00
Mohamed ElShahawi 4acac3e9ef drivers: esp32/clock_control: Add Clock Driver
- Support PLL for Higher Frequencies 80,160,240 MHz
- Support XTAL Frequencies 26MHz, 40MHz
- Clock Driver can't be disabled, because all of the other drivers
will depend on it to get their operating Frequency based on chosen
clock source (XTAL/PLL).

- Add needed references to BBPLL i2c bus ROM functions.
- Add `rtc` node to Device Tree.
- Since All Peripherals Frequency is depending on CPU_CLK Source,
`clock-source` property added to CPU node

Signed-off-by: Mohamed ElShahawi <ExtremeGTX@hotmail.com>
2020-06-16 09:00:51 -05:00
Mohamed ElShahawi 55471982f6 esp32: drivers: Add Entropy Device tree support
- Add TRNG module to esp32.dtsi
- Updated the note about TRNG register address

Signed-off-by: Mohamed ElShahawi <ExtremeGTX@hotmail.com>
2019-10-24 09:09:41 -05:00
Mohamed ElShahawi 566d07e00c [ESP32] drivers: Add I2C Device tree support
- Add I2C modules to esp32.dtsi
- I2C Pins and bitrate config moved to esp32.dts

Signed-off-by: Mohamed ElShahawi <ExtremeGTX@hotmail.com>
2019-10-22 08:01:24 -05:00
Mohamed ElShahawi bcd9e49f3f drivers: esp32: UART - use dts config for HW flow Control
- dts updated for UART1/2
- Additional check added to _INIT macro to configure flow control mode
- Additional check added to _INIT macro to set CTS/RTS gpios values
- Additional check added for gpio config

Signed-off-by: Mohamed ElShahawi <ExtremeGTX@hotmail.com>
2019-09-11 07:50:20 -05:00
Mohamed ElShahawi 2d035c4191 drivers: esp32: Add UART Driver with FIFO/Interrupt support
- Fixes #3981
- Implement UART Polling functions
- Implement UART Interrupt APIs
- Remove dependency on esp32_rom_uart_xxx functions
- Update Device tree with UART addresses and pin config
- Update ESP32 UART KConfig

Notes about implementation:
- Interrupts now defined as a local macros, and should be removed
later on, when interrupts for esp32 are supported in dts

- Threshold interrupts are used for TX/RX
- Reseting FIFOs using _RST bit will corrupt FIFO of UART2 when used for
UART1 and vice-versa, so a generic way is used for all three UARTs

- Old Silicon rev is not supported

Signed-off-by: Mohamed ElShahawi <ExtremeGTX@hotmail.com>
2019-09-11 07:50:20 -05:00
Piotr Zięcik 7d56fc35fd dts: Add information about CPU frequency to the cpu nodes
This commit adds 'clock-frequency' property to the cpu nodes.
The clock frequency specified in the added property is used
during platform configuration. Examples:

- The SWO logger uses clock frequency to configure SWO output.
- Plenty of platforms need CPU clock specified for their HAL.
- Most of devices with USB needs information about CPU clock
  in order to configure USB clock source.

Signed-off-by: Piotr Zięcik <piotr.ziecik@nordicsemi.no>
2019-07-17 21:53:36 +02:00
Yannis Damigos ae781bd9bd dts: Restructure xtensa dts directory
Restructure xtensa dts directory

Signed-off-by: Yannis Damigos <giannis.damigos@gmail.com>
2019-06-27 07:21:11 -04:00
Ulf Magnusson a84ded74ea dts: Replace status = "ok" with status = "okay"
The DT spec. only has "okay" and not "ok". The Linux kernel has around
12k "okay"s and 300 "ok"s.

The scripts/dts scripts only check for "disabled", so should be safe re.
those at least.

The replacement was done with

    git ls-files | xargs sed -i 's/status\s*=\s*"ok"/status = "okay"/'

Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
2019-06-14 19:51:13 -05:00
Savinay Dharmappa 3bec750268 dts: xtensa: esp32: Add device tree support.
add device tree support for esp32

Signed-off-by: Savinay Dharmappa <savinay.dharmappa@intel.com>
2019-01-29 09:47:17 -06:00