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made Rock Pi 4 working again with recent 5.x kernels

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Signed-off-by: Carsten Menke <cm@p-i-u.de>
This commit is contained in:
Carsten Menke
2019-12-29 18:16:55 +00:00
committed by Tom Ingleby
parent 5b8ec38440
commit 79043568dd
3 changed files with 20 additions and 14 deletions
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1
README.md
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@@ -46,6 +46,7 @@ ARM
* [phyBOARD-Wega](../master/docs/phyboard-wega.md)
* [96Boards](../master/docs/96boards.md)
* [ADLINK IPi-SMARC ARM](../master/docs/adlink_ipi_arm.md)
* [Rock Pi 4](../master/docs/rockpi4.md)
MIPS
---

5
src/arm/arm.c
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@@ -90,7 +90,10 @@ mraa_arm_platform()
platform_type = MRAA_96BOARDS;
else if (mraa_file_contains("/proc/device-tree/model", "Avnet Ultra96 Rev1"))
platform_type = MRAA_96BOARDS;
else if (mraa_file_contains("/proc/device-tree/model", "ROCK PI 4"))
else if (mraa_file_contains("/proc/device-tree/model", "ROCK Pi 4") ||
mraa_file_contains("/proc/device-tree/model", "ROCK PI 4A") ||
mraa_file_contains("/proc/device-tree/model", "ROCK PI 4B")
)
platform_type = MRAA_ROCKPI4;
else if (mraa_file_contains("/proc/device-tree/compatible", "raspberrypi,"))
platform_type = MRAA_RASPBERRY_PI;

28
src/arm/rockpi4.c
View File

@@ -15,13 +15,17 @@
#include "common.h"
#define DT_BASE "/proc/device-tree"
/*
* "Radxa ROCK Pi 4" is the model name on stock 5.x kernels
* "ROCK PI 4A", "ROCK PI 4B" is used on Radxa 4.4 kernel
* so we search for the string below by ignoring case
*/
#define PLATFORM_NAME_ROCK_PI_4 "ROCK Pi 4"
#define PLATFORM_NAME_ROCK_PI_4A "ROCK PI 4A"
#define PLATFORM_NAME_ROCK_PI_4B "ROCK PI 4B"
#define MAX_SIZE 64
const char* rockpi4a_serialdev[MRAA_ROCKPI4_UART_COUNT] = { "/dev/ttyS2","/dev/ttyS4"};
const char* rockpi4b_serialdev[MRAA_ROCKPI4_UART_COUNT] = { "/dev/ttyS2","/dev/ttyS4"};
const char* rockpi4_serialdev[MRAA_ROCKPI4_UART_COUNT] = { "/dev/ttyS2","/dev/ttyS4"};
void
mraa_rockpi4_pininfo(mraa_board_t* board, int index, int sysfs_pin, mraa_pincapabilities_t pincapabilities_t, char* fmt, ...)
@@ -67,14 +71,13 @@ mraa_rockpi4()
if (mraa_file_exist(DT_BASE "/model")) {
// We are on a modern kernel, great!!!!
if (mraa_file_contains(DT_BASE "/model", "ROCK PI 4A")) {
b->platform_name = PLATFORM_NAME_ROCK_PI_4A;
b->uart_dev[0].device_path = (char*) rockpi4a_serialdev[0];
b->uart_dev[1].device_path = (char*) rockpi4a_serialdev[1];
} else if (mraa_file_contains(DT_BASE "/model", "ROCK PI 4B")) {
b->platform_name = PLATFORM_NAME_ROCK_PI_4B;
b->uart_dev[0].device_path = (char*) rockpi4b_serialdev[0];
b->uart_dev[1].device_path = (char*) rockpi4b_serialdev[1];
if (mraa_file_contains(DT_BASE "/model", PLATFORM_NAME_ROCK_PI_4) ||
mraa_file_contains(DT_BASE "/model", PLATFORM_NAME_ROCK_PI_4A) ||
mraa_file_contains(DT_BASE "/model", PLATFORM_NAME_ROCK_PI_4B)
) {
b->platform_name = PLATFORM_NAME_ROCK_PI_4;
b->uart_dev[0].device_path = (char*) rockpi4_serialdev[0];
b->uart_dev[1].device_path = (char*) rockpi4_serialdev[1];
}
}
@@ -85,8 +88,7 @@ mraa_rockpi4()
b->uart_dev[1].index = 4;
// I2C
if ((strncmp(b->platform_name, PLATFORM_NAME_ROCK_PI_4B, MAX_SIZE) == 0)
|| (strncmp(b->platform_name, PLATFORM_NAME_ROCK_PI_4B, MAX_SIZE) == 0)) {
if (strncmp(b->platform_name, PLATFORM_NAME_ROCK_PI_4, MAX_SIZE) == 0) {
b->i2c_bus_count = MRAA_ROCKPI4_I2C_COUNT;
b->def_i2c_bus = 0;
b->i2c_bus[0].bus_id = 7;