mips: add initial support for qca956x referenced board
QCA9563 is CPU used on AP152 board :
Clock speed : 750 MHz ,
Arch : Mips 74Kc,
Eth : SGMII interface,
MIMO config : 3 * 3 450M,
2 * USB 2.0,
Signed-off-by: Rosy Song <rosysong@rosinson.com>
Changes for v2:
- coding style cleanup
- remove ununsed flash chip in defconfig
- enable automatic icache / dcache size in defconfig
Changes for v3:
- add detailed information for qca956x in commit message
Changes for v4:
- remove pre-configured network settings in ap152.h
Changes for v5:
- coding style cleanup
diff --git a/board/qca/ap152/ap152.c b/board/qca/ap152/ap152.c
new file mode 100644
index 0000000..30cd565
--- /dev/null
+++ b/board/qca/ap152/ap152.c
@@ -0,0 +1,81 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018 Rosy Song <rosysong@rosinson.com>
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/addrspace.h>
+#include <asm/types.h>
+#include <mach/ar71xx_regs.h>
+#include <mach/ddr.h>
+#include <mach/ath79.h>
+#include <debug_uart.h>
+
+#define RST_RESET_RTC_RESET_LSB 27
+#define RST_RESET_RTC_RESET_MASK 0x08000000
+#define RST_RESET_RTC_RESET_SET(x) \
+ (((x) << RST_RESET_RTC_RESET_LSB) & RST_RESET_RTC_RESET_MASK)
+
+#ifdef CONFIG_DEBUG_UART_BOARD_INIT
+void board_debug_uart_init(void)
+{
+ void __iomem *regs;
+ u32 val;
+
+ regs = map_physmem(AR71XX_GPIO_BASE, AR71XX_GPIO_SIZE,
+ MAP_NOCACHE);
+
+ /* UART : RX18, TX22 done
+ * GPIO18 as input, GPIO22 as output
+ */
+ val = readl(regs + AR71XX_GPIO_REG_OE);
+ val |= QCA956X_GPIO(18);
+ val &= ~QCA956X_GPIO(22);
+ writel(val, regs + AR71XX_GPIO_REG_OE);
+
+ /*
+ * Enable GPIO22 as UART0_SOUT
+ */
+ val = readl(regs + QCA956X_GPIO_REG_OUT_FUNC5);
+ val &= ~QCA956X_GPIO_MUX_MASK(16);
+ val |= QCA956X_GPIO_OUT_MUX_UART0_SOUT << 16;
+ writel(val, regs + QCA956X_GPIO_REG_OUT_FUNC5);
+
+ /*
+ * Enable GPIO18 as UART0_SIN
+ */
+ val = readl(regs + QCA956X_GPIO_REG_IN_ENABLE0);
+ val &= ~QCA956X_GPIO_MUX_MASK(8);
+ val |= QCA956X_GPIO_IN_MUX_UART0_SIN << 8;
+ writel(val, regs + QCA956X_GPIO_REG_IN_ENABLE0);
+
+ /*
+ * Enable GPIO22 output
+ */
+ val = readl(regs + AR71XX_GPIO_REG_OUT);
+ val |= QCA956X_GPIO(22);
+ writel(val, regs + AR71XX_GPIO_REG_OUT);
+}
+#endif
+
+int board_early_init_f(void)
+{
+ u32 reg;
+ void __iomem *rst_regs = map_physmem(AR71XX_RESET_BASE,
+ AR71XX_RESET_SIZE, MAP_NOCACHE);
+
+#ifndef CONFIG_SKIP_LOWLEVEL_INIT
+ /* CPU:775, DDR:650, AHB:258 */
+ qca956x_pll_init();
+ qca956x_ddr_init();
+#endif
+
+ /* Take WMAC out of reset */
+ reg = readl(rst_regs + QCA956X_RESET_REG_RESET_MODULE);
+ reg &= (~RST_RESET_RTC_RESET_SET(1));
+ writel(reg, rst_regs + QCA956X_RESET_REG_RESET_MODULE);
+
+ ath79_eth_reset();
+ return 0;
+}