rockchip: rk3308: Add support for ROC-RK3308-CC board
ROC-RK3308-CC is a rk3308 based board designed by
Firelfy, with eMMC and 256MB DDR3 and RTL8188 Wifi
on board.
Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/board/firefly/firefly-rk3308/roc_cc_rk3308.c b/board/firefly/firefly-rk3308/roc_cc_rk3308.c
new file mode 100644
index 0000000..5f0a659
--- /dev/null
+++ b/board/firefly/firefly-rk3308/roc_cc_rk3308.c
@@ -0,0 +1,81 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2019 Rockchip Electronics Co., Ltd
+ */
+
+#include <common.h>
+#include <adc.h>
+#include <asm/io.h>
+#include <asm/arch/grf_rk3308.h>
+#include <asm/arch-rockchip/hardware.h>
+
+#if defined(CONFIG_DEBUG_UART)
+#define GRF_BASE 0xff000000
+
+enum {
+ GPIO1C7_SHIFT = 8,
+ GPIO1C7_MASK = GENMASK(11, 8),
+ GPIO1C7_GPIO = 0,
+ GPIO1C7_UART1_RTSN,
+ GPIO1C7_UART2_TX_M0,
+ GPIO1C7_SPI2_MOSI,
+ GPIO1C7_JTAG_TMS,
+
+ GPIO1C6_SHIFT = 4,
+ GPIO1C6_MASK = GENMASK(7, 4),
+ GPIO1C6_GPIO = 0,
+ GPIO1C6_UART1_CTSN,
+ GPIO1C6_UART2_RX_M0,
+ GPIO1C6_SPI2_MISO,
+ GPIO1C6_JTAG_TCLK,
+
+ GPIO4D3_SHIFT = 6,
+ GPIO4D3_MASK = GENMASK(7, 6),
+ GPIO4D3_GPIO = 0,
+ GPIO4D3_SDMMC_D3,
+ GPIO4D3_UART2_TX_M1,
+
+ GPIO4D2_SHIFT = 4,
+ GPIO4D2_MASK = GENMASK(5, 4),
+ GPIO4D2_GPIO = 0,
+ GPIO4D2_SDMMC_D2,
+ GPIO4D2_UART2_RX_M1,
+
+ UART2_IO_SEL_SHIFT = 2,
+ UART2_IO_SEL_MASK = GENMASK(3, 2),
+ UART2_IO_SEL_M0 = 0,
+ UART2_IO_SEL_M1,
+ UART2_IO_SEL_USB,
+};
+
+void board_debug_uart_init(void)
+{
+ static struct rk3308_grf * const grf = (void *)GRF_BASE;
+
+ /* Enable early UART2 channel m0 on the rk3308 */
+ rk_clrsetreg(&grf->soc_con5, UART2_IO_SEL_MASK,
+ UART2_IO_SEL_M0 << UART2_IO_SEL_SHIFT);
+ rk_clrsetreg(&grf->gpio1ch_iomux,
+ GPIO1C6_MASK | GPIO1C7_MASK,
+ GPIO1C6_UART2_RX_M0 << GPIO1C6_SHIFT |
+ GPIO1C7_UART2_TX_M0 << GPIO1C7_SHIFT);
+}
+#endif
+
+#define KEY_DOWN_MIN_VAL 0
+#define KEY_DOWN_MAX_VAL 30
+
+int rockchip_dnl_key_pressed(void)
+{
+ unsigned int val;
+
+ if (adc_channel_single_shot("saradc", 1, &val)) {
+ printf("%s read adc key val failed\n", __func__);
+ return false;
+ }
+
+ if (val >= KEY_DOWN_MIN_VAL && val <= KEY_DOWN_MAX_VAL)
+ return true;
+ else
+ return false;
+}