[U-Boot] [PATCH v8 1/9] mips: add base support for QCA/Atheros ath79 SOCs

[Marek Vasut]

On 03/16/2016 09:59 AM, Wills Wang wrote:
> This patch add some common code for QCA/Atheros ath79 SOCs such as
> DDR tuning, chip reset and CPU detection.
> 
> Signed-off-by: Wills Wang <wills.wang at live.com>
> ---
> 
> Changes in v8:
> - Use setbits_be32
> - Use lookup-table instead of big switch statement for CPU detection
> 

Good stuff, minor nits below.

> +++ b/arch/mips/mach-ath79/cpu.c
> @@ -0,0 +1,142 @@
> +/*
> + * Copyright (C) 2015-2016 Wills Wang <wills.wang at live.com>
> + *
> + * SPDX-License-Identifier: GPL-2.0+
> + */
> +
> +#include <common.h>
> +#include <asm/io.h>
> +#include <asm/addrspace.h>
> +#include <asm/types.h>
> +#include <mach/ath79.h>
> +#include <mach/ar71xx_regs.h>
> +
> +struct ath79_soc_desc {
> +	enum ath79_soc_type soc;
> +	const char *chip;
> +	int major;
> +	int minor;

All of this stuff can be const, no ?

> +};

[...]

> diff --git a/arch/mips/mach-ath79/dram.c b/arch/mips/mach-ath79/dram.c
> new file mode 100644
> index 0000000..c29e98c
> --- /dev/null
> +++ b/arch/mips/mach-ath79/dram.c
> @@ -0,0 +1,16 @@
> +/*
> + * Copyright (C) 2015-2016 Wills Wang <wills.wang at live.com>
> + *
> + * SPDX-License-Identifier: GPL-2.0+
> + */
> +
> +#include <common.h>
> +#include <linux/sizes.h>
> +#include <asm/addrspace.h>
> +#include <mach/ddr.h>
> +
> +phys_size_t initdram(int board_type)
> +{
> +	ddr_tap_tuning();

Is the DDR tap tuning needed on all AR7xxx/AR9xxx systems ?

> +	return get_ram_size((void *)KSEG1, SZ_256M);
> +}
> diff --git a/arch/mips/mach-ath79/include/mach/ar71xx_regs.h b/arch/mips/mach-ath79/include/mach/ar71xx_regs.h
> new file mode 100644
> index 0000000..893dedc
> --- /dev/null
> +++ b/arch/mips/mach-ath79/include/mach/ar71xx_regs.h
> @@ -0,0 +1,1184 @@
> +/*
> + * Atheros AR71XX/AR724X/AR913X SoC register definitions
> + *
> + * Copyright (C) 2015-2016 Wills Wang <wills.wang at live.com>
> + * Copyright (C) 2010-2011 Jaiganesh Narayanan <jnarayanan at atheros.com>
> + * Copyright (C) 2008-2010 Gabor Juhos <juhosg at openwrt.org>
> + * Copyright (C) 2008 Imre Kaloz <kaloz at openwrt.org>
> + *
> + * SPDX-License-Identifier:     GPL-2.0+
> + */
> +
> +#ifndef __ASM_MACH_AR71XX_REGS_H
> +#define __ASM_MACH_AR71XX_REGS_H
> +
> +#ifndef __ASSEMBLY__
> +#include <linux/bitops.h>
> +#else
> +#ifndef BIT
> +#define BIT(nr)                 (1 << (nr))

This should really go into some common header.

> +#endif
> +#endif
> +
> +#define AR71XX_APB_BASE                 0x18000000
> +#define AR71XX_GE0_BASE                 0x19000000
> +#define AR71XX_GE0_SIZE                 0x10000
> +#define AR71XX_GE1_BASE                 0x1a000000
> +#define AR71XX_GE1_SIZE                 0x10000
> +#define AR71XX_EHCI_BASE                0x1b000000
> +#define AR71XX_EHCI_SIZE                0x1000
> +#define AR71XX_OHCI_BASE                0x1c000000
> +#define AR71XX_OHCI_SIZE                0x1000
> +#define AR71XX_SPI_BASE                 0x1f000000
> +#define AR71XX_SPI_SIZE                 0x01000000

Indent the macro value with tabs in this file please.

[...]

-- 
Best regards,
Marek Vasut