hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

ARM: orion5x: use DT to describe NOR on edmini_v2 

This commit converts the already partially DT-converted edmini_v2
platform to use the Device Tree for NOR flash, using the Device Bus.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Link: https://lkml.kernel.org/r/1398202002-28530-32-git-send-email-thomas.petazzoni@free-electrons.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
This commit is contained in:
Thomas Petazzoni 2014-04-22 23:26:35 +02:00 committed by Jason Cooper
parent a665fce3e7
commit a54cd73b84
2 changed files with 42 additions and 63 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
arch/arm/boot/dts/orion5x-lacie-ethernet-disk-mini-v2.dts
View File

@ -28,7 +28,8 @@
soc {
ranges = <MBUS_ID(0xf0, 0x01) 0 0xf1000000 0x100000>,
<MBUS_ID(0x09, 0x00) 0 0xf2200000 0x800>;
<MBUS_ID(0x09, 0x00) 0 0xf2200000 0x800>,
<MBUS_ID(0x01, 0x0f) 0 0xfff80000 0x80000>;
};
gpio-keys {
@ -56,6 +57,46 @@
};
};
&devbus_bootcs {
status = "okay";
/* Read parameters */
devbus,bus-width = <8>;
devbus,turn-off-ps = <90000>;
devbus,badr-skew-ps = <0>;
devbus,acc-first-ps = <186000>;
devbus,acc-next-ps = <186000>;
/* Write parameters */
devbus,wr-high-ps = <90000>;
devbus,wr-low-ps = <90000>;
devbus,ale-wr-ps = <90000>;
/*
* Currently the MTD code does not recognize the MX29LV400CBCT
* as a bottom-type device. This could cause risks of
* accidentally erasing critical flash sectors. We thus define
* a single, write-protected partition covering the whole
* flash. TODO: once the flash part TOP/BOTTOM detection
* issue is sorted out in the MTD code, break this into at
* least three partitions: 'u-boot code', 'u-boot environment'
* and 'whatever is left'.
*/
flash@0 {
compatible = "cfi-flash";
reg = <0 0x80000>;
bank-width = <1>;
#address-cells = <1>;
#size-cells = <1>;
partition@0 {
label = "Full512Kb";
reg = <0 0x80000>;
read-only;
};
};
};
&ehci0 {
status = "okay";
};

62
arch/arm/mach-orion5x/edmini_v2-setup.c
View File

@ -42,74 +42,12 @@
* EDMINI_V2 Info
****************************************************************************/
/*
* 512KB NOR flash Device bus boot chip select
*/
#define EDMINI_V2_NOR_BOOT_BASE 0xfff80000
#define EDMINI_V2_NOR_BOOT_SIZE SZ_512K
/*****************************************************************************
* 512KB NOR Flash on BOOT Device
****************************************************************************/
/*
* Currently the MTD code does not recognize the MX29LV400CBCT as a bottom
* -type device. This could cause risks of accidentally erasing critical
* flash sectors. We thus define a single, write-protected partition covering
* the whole flash.
* TODO: once the flash part TOP/BOTTOM detection issue is sorted out in the MTD
* code, break this into at least three partitions: 'u-boot code', 'u-boot
* environment' and 'whatever is left'.
*/
static struct mtd_partition edmini_v2_partitions[] = {
{
.name = "Full512kb",
.size = 0x00080000,
.offset = 0x00000000,
.mask_flags = MTD_WRITEABLE,
},
};
static struct physmap_flash_data edmini_v2_nor_flash_data = {
.width = 1,
.parts = edmini_v2_partitions,
.nr_parts = ARRAY_SIZE(edmini_v2_partitions),
};
static struct resource edmini_v2_nor_flash_resource = {
.flags = IORESOURCE_MEM,
.start = EDMINI_V2_NOR_BOOT_BASE,
.end = EDMINI_V2_NOR_BOOT_BASE
+ EDMINI_V2_NOR_BOOT_SIZE - 1,
};
static struct platform_device edmini_v2_nor_flash = {
.name = "physmap-flash",
.id = 0,
.dev = {
.platform_data = &edmini_v2_nor_flash_data,
},
.num_resources = 1,
.resource = &edmini_v2_nor_flash_resource,
};
/*****************************************************************************
* General Setup
****************************************************************************/
void __init edmini_v2_init(void)
{
/*
* Configure peripherals.
*/
mvebu_mbus_add_window_by_id(ORION_MBUS_DEVBUS_BOOT_TARGET,
ORION_MBUS_DEVBUS_BOOT_ATTR,
EDMINI_V2_NOR_BOOT_BASE,
EDMINI_V2_NOR_BOOT_SIZE);
platform_device_register(&edmini_v2_nor_flash);
pr_notice("edmini_v2: USB device port, flash write and power-off "
"are not yet supported.\n");
}