[U-Boot] [PATCH 11/20] arm: socfpga: add pinmux for Arria 10

From: Ley Foon Tan <ley.foon.tan@intel.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 11/20] arm: socfpga: add pinmux for Arria 10
Date: Mon, 06 Mar 2017 16:08:22 +0800	[thread overview]
Message-ID: <1488787702.2433.20.camel@intel.com> (raw)
In-Reply-To: <e7932ef4-5b7f-88ec-4549-f719a0d5aefe@denx.de>

On Sab, 2017-02-25 at 22:41 +0100, Marek Vasut wrote:
> On 02/22/2017 10:47 AM, Ley Foon Tan wrote:
> > 
> > Add pinmux support for Arria 10.
> > 
> > Signed-off-by: Tien Fong Chee <tien.fong.chee@intel.com>
> > Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
> > ---
> >  arch/arm/mach-socfpga/Makefile              |  1 +
> >  arch/arm/mach-socfpga/include/mach/pinmux.h | 15 +++++
> >  arch/arm/mach-socfpga/pinmux_arria10.c      | 98
> > +++++++++++++++++++++++++++++
> >  3 files changed, 114 insertions(+)
> >  create mode 100644 arch/arm/mach-socfpga/include/mach/pinmux.h
> >  create mode 100644 arch/arm/mach-socfpga/pinmux_arria10.c
> > 
> > diff --git a/arch/arm/mach-socfpga/Makefile b/arch/arm/mach-
> > socfpga/Makefile
> > index 9c4617f..68d55e4 100644
> > --- a/arch/arm/mach-socfpga/Makefile
> > +++ b/arch/arm/mach-socfpga/Makefile
> > @@ -12,6 +12,7 @@ obj-y	+= misc.o timer.o reset_manager.o
> > clock_manager.o \
> >  
> >  obj-$(CONFIG_TARGET_SOCFPGA_ARRIA10) += clock_manager_arria10.o \
> >  					misc_arria10.o		
> > \
> > +					pinmux_arria10.o	\
> >  					reset_manager_arria10.o
> >  
> >  obj-$(CONFIG_SPL_BUILD) += spl.o freeze_controller.o
> > diff --git a/arch/arm/mach-socfpga/include/mach/pinmux.h
> > b/arch/arm/mach-socfpga/include/mach/pinmux.h
> > new file mode 100644
> > index 0000000..c5d5dd6
> > --- /dev/null
> > +++ b/arch/arm/mach-socfpga/include/mach/pinmux.h
> > @@ -0,0 +1,15 @@
> > +/*
> > + * Copyright (C) 2016-2017 Intel Corporation <www.intel.com>
> > + *
> > + * SPDX-License-Identifier:	GPL-2.0
> > + */
> > +
> > +#ifndef	_PINMUX_H_
> > +#define	_PINMUX_H_
> Use [space] instead of [tab] after #ifdef/#define
Okay.
> 
> > 
> > +#ifndef __ASSEMBLY__
> > +int config_dedicated_pins(const void *blob);
> > +int config_pins(const void *blob, const char *pin_grp);
> > +#endif
> > +
> > +#endif /* _PINMUX_H_ */
> > diff --git a/arch/arm/mach-socfpga/pinmux_arria10.c
> > b/arch/arm/mach-socfpga/pinmux_arria10.c
> > new file mode 100644
> > index 0000000..04acaa2
> > --- /dev/null
> > +++ b/arch/arm/mach-socfpga/pinmux_arria10.c
> > @@ -0,0 +1,98 @@
> > +/*
> > + *  Copyright (C) 2016-2017 Intel Corporation <www.intel.com>
> > + *
> > + * SPDX-License-Identifier:	GPL-2.0
> > + */
> > +
> > +#include <common.h>
> > +#include <asm/io.h>
> > +#include <fdtdec.h>
> > +#include <asm/arch/pinmux.h>
> > +
> > +static int do_pinctr_pin(const void *blob, int child, const char
> > *node_name)
> > +{
> > +	int len;
> > +	fdt_addr_t base_addr;
> > +	fdt_size_t size;
> > +	const u32 *cell;
> > +	u32 offset, value;
> > +
> > +	base_addr = fdtdec_get_addr_size(blob, child, "reg",
> > &size);
> > +	if (base_addr != FDT_ADDR_T_NONE) {
> > +		cell = fdt_getprop(blob, child, "pinctrl-
> > single,pins",
> > +			&len);
> > +		if (cell != NULL) {
> > +			debug("%p %d\n", cell, len);
> > +			for (; len > 0; len -= (2*sizeof(u32))) {
> 2 * sizeof(u32) , spacing
Okay.
> 
> What about len == 0 , not used ?
Will add the checking for len > 0.

if (cell != NULL && len > 0) {
}
> 
> > 
> > +				offset = fdt32_to_cpu(*cell++);
> > +				value = fdt32_to_cpu(*cell++);
> > +				debug("<0x%x 0x%x>\n", offset,
> > value);
> > +				writel(value, base_addr + offset);
> > +			}
> > +			return 0;
> > +		}
> > +	}
> > +	return -EFAULT;
> > +}
[...]

Regards
Ley Foon