From: Chris Morgan <macromor...@hotmail.com>
This reverts commit 41a60d0e5cef54a59596a58940fa7c9cf071034b.
On some of the supported devices the adc detect code always returns
that the button has been pushed, and as a result the device will
not boot normally.
Signed-off-by: Chris Morgan <macromor...@hotmail.com>
---
board/anbernic/rgxx3_rk3566/rgxx3-rk3566.c | 64 ----------------------
1 file changed, 64 deletions(-)
diff --git a/board/anbernic/rgxx3_rk3566/rgxx3-rk3566.c
b/board/anbernic/rgxx3_rk3566/rgxx3-rk3566.c
index 099eea60c3..5c57b902d1 100644
--- a/board/anbernic/rgxx3_rk3566/rgxx3-rk3566.c
+++ b/board/anbernic/rgxx3_rk3566/rgxx3-rk3566.c
@@ -6,14 +6,12 @@
#include <abuf.h>
#include <adc.h>
#include <asm/io.h>
-#include <command.h>
#include <display.h>
#include <dm.h>
#include <dm/lists.h>
#include <env.h>
#include <fdt_support.h>
#include <linux/delay.h>
-#include <linux/iopoll.h>
#include <mipi_dsi.h>
#include <mmc.h>
#include <panel.h>
@@ -21,8 +19,6 @@
#include <stdlib.h>
#include <video_bridge.h>
-#define BOOT_BROM_DOWNLOAD 0xef08a53c
-
#define GPIO0_BASE 0xfdd60000
#define GPIO4_BASE 0xfe770000
#define GPIO_SWPORT_DR_L 0x0000
@@ -36,14 +32,6 @@
#define GPIO_WRITEMASK(bits) ((bits) << 16)
-#define SARADC_BASE 0xfe720000
-#define SARADC_DATA 0x0000
-#define SARADC_STAS 0x0004
-#define SARADC_ADC_STATUS BIT(0)
-#define SARADC_CTRL 0x0008
-#define SARADC_INPUT_SRC_MSK 0x7
-#define SARADC_POWER_CTRL BIT(3)
-
#define DTB_DIR "rockchip/"
struct rg3xx_model {
@@ -169,64 +157,12 @@ static const struct rg353_panel rg353_panel_details[] = {
},
};
-/*
- * The device has internal eMMC, and while some devices have an exposed
- * clk pin you can ground to force a bypass not all devices do. As a
- * result it may be possible for some devices to become a perma-brick
- * if a corrupted TPL or SPL stage with a valid header is flashed to
- * the internal eMMC. Add functionality to read ADC channel 0 (the func
- * button) as early as possible in the boot process to provide some
- * protection against this. If we ever get an open TPL stage, we should
- * consider moving this function there.
- */
-void read_func_button(void)
-{
- int ret;
- u32 reg;
-
- /* Turn off SARADC to reset it. */
- writel(0, (SARADC_BASE + SARADC_CTRL));
-
- /* Enable channel 0 and power on SARADC. */
- writel(((0 & SARADC_INPUT_SRC_MSK) | SARADC_POWER_CTRL),
- (SARADC_BASE + SARADC_CTRL));
-
- /*
- * Wait for data to be ready. Use timeout of 20000us from
- * rockchip_saradc driver.
- */
- ret = readl_poll_timeout((SARADC_BASE + SARADC_STAS), reg,
- !(reg & SARADC_ADC_STATUS), 20000);
- if (ret) {
- printf("ADC Timeout");
- return;
- }
-
- /* Read the data from the SARADC. */
- reg = readl((SARADC_BASE + SARADC_DATA));
-
- /* Turn the SARADC back off so it's ready to be used again. */
- writel(0, (SARADC_BASE + SARADC_CTRL));
-
- /*
- * If the value is less than 30 the button is being pressed.
- * Reset the device back into Rockchip download mode.
- */
- if (reg <= 30) {
- printf("download key pressed, entering download mode...");
- writel(BOOT_BROM_DOWNLOAD, CONFIG_ROCKCHIP_BOOT_MODE_REG);
- do_reset(NULL, 0, 0, NULL);
- }
-};
-
/*
* Start LED very early so user knows device is on. Set color
* to red.
*/
void spl_board_init(void)
{
- read_func_button();
-
/* Set GPIO0_C5, GPIO0_C6, and GPIO0_C7 to output. */
writel(GPIO_WRITEMASK(GPIO_C7 | GPIO_C6 | GPIO_C5) | \
(GPIO_C7 | GPIO_C6 | GPIO_C5),
--
2.34.1
