This allow to clean the omap nand driver that were trying in x8 and x16 bits mode.
This also make work onfi detection on beagleboard :
Before :
[ 1.954803] NAND device: Manufacturer ID: 0x2c, Chip ID: 0xba (Micron NAND 256MiB 1,8V 16-bit), page size: 2048, OOB size: 64
After :
[ 1.914825] ONFI param page 0 valid
[ 1.919158] ONFI flash detected
[ 1.922515] NAND device: Manufacturer ID: 0x2c, Chip ID: 0xba (Micron MT29F2G16ABD), page size: 2048, OOB size: 64
platform data devsize is renamed bussize. It now indicate the maximun size of the nand bus.
Signed-off-by: Matthieu CASTET <matthieu.castet@xxxxxxxxxx>
---
arch/arm/mach-omap2/board-3630sdp.c | 2 +-
arch/arm/mach-omap2/board-devkit8000.c | 2 +-
arch/arm/mach-omap2/board-flash.c | 8 ++---
arch/arm/mach-omap2/board-igep0020.c | 2 +-
arch/arm/mach-omap2/board-omap3beagle.c | 2 +-
arch/arm/mach-omap2/board-omap3evm.c | 2 +-
arch/arm/mach-omap2/board-omap3pandora.c | 2 +-
arch/arm/mach-omap2/board-omap3touchbook.c | 2 +-
arch/arm/mach-omap2/board-zoom.c | 2 +-
arch/arm/mach-omap2/common-board-devices.c | 2 +-
arch/arm/mach-omap2/gpmc-nand.c | 5 ---
drivers/mtd/nand/omap2.c | 42 ++++++++++++++------------
include/linux/platform_data/mtd-nand-omap2.h | 7 ++++-
13 files changed, 42 insertions(+), 38 deletions(-)
diff --git a/arch/arm/mach-omap2/board-3630sdp.c b/arch/arm/mach-omap2/board-3630sdp.c
index fc224ad..d7b981b 100644
--- a/arch/arm/mach-omap2/board-3630sdp.c
+++ b/arch/arm/mach-omap2/board-3630sdp.c
@@ -198,7 +198,7 @@ static void __init omap_sdp_init(void)
h8mbx00u0mer0em_sdrc_params);
zoom_display_init();
board_smc91x_init();
- board_flash_init(sdp_flash_partitions, chip_sel_sdp, NAND_BUSWIDTH_16);
+ board_flash_init(sdp_flash_partitions, chip_sel_sdp, NAND_OMAP_BUS_16);
enable_board_wakeup_source();
usbhs_init(&usbhs_bdata);
}
diff --git a/arch/arm/mach-omap2/board-devkit8000.c b/arch/arm/mach-omap2/board-devkit8000.c
index 1fd161e..b3487e1 100644
--- a/arch/arm/mach-omap2/board-devkit8000.c
+++ b/arch/arm/mach-omap2/board-devkit8000.c
@@ -621,7 +621,7 @@ static void __init devkit8000_init(void)
usb_musb_init(NULL);
usbhs_init(&usbhs_bdata);
- omap_nand_flash_init(NAND_BUSWIDTH_16, devkit8000_nand_partitions,
+ omap_nand_flash_init(NAND_OMAP_BUS_16, devkit8000_nand_partitions,
ARRAY_SIZE(devkit8000_nand_partitions));
omap_twl4030_audio_init("omap3beagle");
diff --git a/arch/arm/mach-omap2/board-flash.c b/arch/arm/mach-omap2/board-flash.c
index 0cabe61..488a1fa 100644
--- a/arch/arm/mach-omap2/board-flash.c
+++ b/arch/arm/mach-omap2/board-flash.c
@@ -133,12 +133,12 @@ static struct omap_nand_platform_data board_nand_data = {
void
__init board_nand_init(struct mtd_partition *nand_parts,
- u8 nr_parts, u8 cs, int nand_type)
+ u8 nr_parts, u8 cs, int bus_type)
{
board_nand_data.cs = cs;
board_nand_data.parts = nand_parts;
board_nand_data.nr_parts = nr_parts;
- board_nand_data.devsize = nand_type;
+ board_nand_data.bussize = bus_type;
board_nand_data.ecc_opt = OMAP_ECC_HAMMING_CODE_DEFAULT;
gpmc_nand_init(&board_nand_data);
@@ -185,7 +185,7 @@ unmap:
* @return - void.
*/
void __init board_flash_init(struct flash_partitions partition_info[],
- char chip_sel_board[][GPMC_CS_NUM], int nand_type)
+ char chip_sel_board[][GPMC_CS_NUM], int bus_type)
{
u8 cs = 0;
u8 norcs = GPMC_CS_NUM + 1;
@@ -238,5 +238,5 @@ void __init board_flash_init(struct flash_partitions partition_info[],
pr_err("NAND: Unable to find configuration in GPMC\n");
else
board_nand_init(partition_info[2].parts,
- partition_info[2].nr_parts, nandcs, nand_type);
+ partition_info[2].nr_parts, nandcs, bus_type);
}
diff --git a/arch/arm/mach-omap2/board-igep0020.c b/arch/arm/mach-omap2/board-igep0020.c
index 48d5e41..732f183 100644
--- a/arch/arm/mach-omap2/board-igep0020.c
+++ b/arch/arm/mach-omap2/board-igep0020.c
@@ -175,7 +175,7 @@ static void __init igep_flash_init(void)
pr_info("IGEP: initializing NAND memory device\n");
board_nand_init(igep_flash_partitions,
ARRAY_SIZE(igep_flash_partitions),
- 0, NAND_BUSWIDTH_16);
+ 0, NAND_OMAP_BUS_16);
} else if (mux == IGEP_SYSBOOT_ONENAND) {
pr_info("IGEP: initializing OneNAND memory device\n");
board_onenand_init(igep_flash_partitions,
diff --git a/arch/arm/mach-omap2/board-omap3beagle.c b/arch/arm/mach-omap2/board-omap3beagle.c
index a08bebc..152b659 100644
--- a/arch/arm/mach-omap2/board-omap3beagle.c
+++ b/arch/arm/mach-omap2/board-omap3beagle.c
@@ -512,7 +512,7 @@ static void __init omap3_beagle_init(void)
usb_musb_init(NULL);
usbhs_init(&usbhs_bdata);
- omap_nand_flash_init(NAND_BUSWIDTH_16, omap3beagle_nand_partitions,
+ omap_nand_flash_init(NAND_OMAP_BUS_16, omap3beagle_nand_partitions,
ARRAY_SIZE(omap3beagle_nand_partitions));
omap_twl4030_audio_init("omap3beagle");
diff --git a/arch/arm/mach-omap2/board-omap3evm.c b/arch/arm/mach-omap2/board-omap3evm.c
index a3959de..830e71b 100644
--- a/arch/arm/mach-omap2/board-omap3evm.c
+++ b/arch/arm/mach-omap2/board-omap3evm.c
@@ -732,7 +732,7 @@ static void __init omap3_evm_init(void)
}
usb_musb_init(&musb_board_data);
usbhs_init(&usbhs_bdata);
- omap_nand_flash_init(NAND_BUSWIDTH_16, omap3evm_nand_partitions,
+ omap_nand_flash_init(NAND_OMAP_BUS_16, omap3evm_nand_partitions,
ARRAY_SIZE(omap3evm_nand_partitions));
omap_ads7846_init(1, OMAP3_EVM_TS_GPIO, 310, NULL);
diff --git a/arch/arm/mach-omap2/board-omap3pandora.c b/arch/arm/mach-omap2/board-omap3pandora.c
index 00a1f4a..592fa5d 100644
--- a/arch/arm/mach-omap2/board-omap3pandora.c
+++ b/arch/arm/mach-omap2/board-omap3pandora.c
@@ -82,7 +82,7 @@ static struct mtd_partition omap3pandora_nand_partitions[] = {
static struct omap_nand_platform_data pandora_nand_data = {
.cs = 0,
- .devsize = NAND_BUSWIDTH_16,
+ .bussize = NAND_OMAP_BUS_16,
.xfer_type = NAND_OMAP_PREFETCH_DMA,
.parts = omap3pandora_nand_partitions,
.nr_parts = ARRAY_SIZE(omap3pandora_nand_partitions),
diff --git a/arch/arm/mach-omap2/board-omap3touchbook.c b/arch/arm/mach-omap2/board-omap3touchbook.c
index 944ffc4..7cef1e3 100644
--- a/arch/arm/mach-omap2/board-omap3touchbook.c
+++ b/arch/arm/mach-omap2/board-omap3touchbook.c
@@ -365,7 +365,7 @@ static void __init omap3_touchbook_init(void)
omap_ads7846_init(4, OMAP3_TS_GPIO, 310, &ads7846_pdata);
usb_musb_init(NULL);
usbhs_init(&usbhs_bdata);
- omap_nand_flash_init(NAND_BUSWIDTH_16, omap3touchbook_nand_partitions,
+ omap_nand_flash_init(NAND_OMAP_BUS_16, omap3touchbook_nand_partitions,
ARRAY_SIZE(omap3touchbook_nand_partitions));
/* Ensure SDRC pins are mux'd for self-refresh */
diff --git a/arch/arm/mach-omap2/board-zoom.c b/arch/arm/mach-omap2/board-zoom.c
index 4994438..49349e7 100644
--- a/arch/arm/mach-omap2/board-zoom.c
+++ b/arch/arm/mach-omap2/board-zoom.c
@@ -114,7 +114,7 @@ static void __init omap_zoom_init(void)
}
board_nand_init(zoom_nand_partitions, ARRAY_SIZE(zoom_nand_partitions),
- ZOOM_NAND_CS, NAND_BUSWIDTH_16);
+ ZOOM_NAND_CS, NAND_OMAP_BUS_16);
zoom_debugboard_init();
zoom_peripherals_init();
diff --git a/arch/arm/mach-omap2/common-board-devices.c b/arch/arm/mach-omap2/common-board-devices.c
index 48daac2..2189f40 100644
--- a/arch/arm/mach-omap2/common-board-devices.c
+++ b/arch/arm/mach-omap2/common-board-devices.c
@@ -128,7 +128,7 @@ void __init omap_nand_flash_init(int options, struct mtd_partition *parts,
nand_data.cs = nandcs;
nand_data.parts = parts;
nand_data.nr_parts = nr_parts;
- nand_data.devsize = options;
+ nand_data.bussize = options;
printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
if (gpmc_nand_init(&nand_data) < 0)
diff --git a/arch/arm/mach-omap2/gpmc-nand.c b/arch/arm/mach-omap2/gpmc-nand.c
index 4acf497..94f622e 100644
--- a/arch/arm/mach-omap2/gpmc-nand.c
+++ b/arch/arm/mach-omap2/gpmc-nand.c
@@ -76,11 +76,6 @@ static int omap2_nand_gpmc_retime(struct omap_nand_platform_data *gpmc_nand_data
t.cs_wr_off = gpmc_round_ns_to_ticks(gpmc_nand_data->gpmc_t->cs_wr_off);
t.wr_cycle = gpmc_round_ns_to_ticks(gpmc_nand_data->gpmc_t->wr_cycle);
- /* Configure GPMC */
- if (gpmc_nand_data->devsize == NAND_BUSWIDTH_16)
- gpmc_cs_configure(gpmc_nand_data->cs, GPMC_CONFIG_DEV_SIZE, 1);
- else
- gpmc_cs_configure(gpmc_nand_data->cs, GPMC_CONFIG_DEV_SIZE, 0);
gpmc_cs_configure(gpmc_nand_data->cs,
GPMC_CONFIG_DEV_TYPE, GPMC_DEVICETYPE_NAND);
gpmc_cs_configure(gpmc_nand_data->cs, GPMC_CONFIG_WP, 0);
diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c
index 5b31386..618cf42 100644
--- a/drivers/mtd/nand/omap2.c
+++ b/drivers/mtd/nand/omap2.c
@@ -1273,7 +1273,7 @@ static int __devinit omap_nand_probe(struct platform_device *pdev)
info->mtd.name = dev_name(&pdev->dev);
info->mtd.owner = THIS_MODULE;
- info->nand.options = pdata->devsize;
+ info->nand.options = NAND_BUSWIDTH_AUTO;
info->nand.options |= NAND_SKIP_BBTSCAN;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -1325,13 +1325,8 @@ static int __devinit omap_nand_probe(struct platform_device *pdev)
break;
case NAND_OMAP_POLLED:
- if (info->nand.options & NAND_BUSWIDTH_16) {
- info->nand.read_buf = omap_read_buf16;
- info->nand.write_buf = omap_write_buf16;
- } else {
- info->nand.read_buf = omap_read_buf8;
- info->nand.write_buf = omap_write_buf8;
- }
+ info->nand.read_buf = omap_read_buf8;
+ info->nand.write_buf = omap_write_buf8;
break;
case NAND_OMAP_PREFETCH_DMA:
@@ -1407,6 +1402,26 @@ static int __devinit omap_nand_probe(struct platform_device *pdev)
goto out_release_mem_region;
}
+ gpmc_cs_configure(info->gpmc_cs, GPMC_CONFIG_DEV_SIZE, 0);
+ if (nand_scan_ident(&info->mtd, 1, NULL)) {
+ err = -ENXIO;
+ goto out_release_mem_region;
+ }
+
+ /* update for 16 bits device */
+ if (info->nand.options & NAND_BUSWIDTH_16) {
+ if (!(pdata->bussize & NAND_OMAP_BUS_16)) {
+ dev_err(&pdev->dev, "detected x16 flash, but board only support x8 flash\n");
+ err = -ENXIO;
+ goto out_release_mem_region;
+ }
+ gpmc_cs_configure(info->gpmc_cs, GPMC_CONFIG_DEV_SIZE, 1);
+ if (pdata->xfer_type == NAND_OMAP_POLLED) {
+ info->nand.read_buf = omap_read_buf16;
+ info->nand.write_buf = omap_write_buf16;
+ }
+ }
+
/* select the ecc type */
if (pdata->ecc_opt == OMAP_ECC_HAMMING_CODE_DEFAULT)
info->nand.ecc.mode = NAND_ECC_SOFT;
@@ -1428,17 +1443,6 @@ static int __devinit omap_nand_probe(struct platform_device *pdev)
}
}
- /* DIP switches on some boards change between 8 and 16 bit
- * bus widths for flash. Try the other width if the first try fails.
- */
- if (nand_scan_ident(&info->mtd, 1, NULL)) {
- info->nand.options ^= NAND_BUSWIDTH_16;
- if (nand_scan_ident(&info->mtd, 1, NULL)) {
- err = -ENXIO;
- goto out_release_mem_region;
- }
- }
-
/* rom code layout */
if (pdata->ecc_opt == OMAP_ECC_HAMMING_CODE_HW_ROMCODE) {
diff --git a/include/linux/platform_data/mtd-nand-omap2.h b/include/linux/platform_data/mtd-nand-omap2.h
index 1a68c1e..766815e 100644
--- a/include/linux/platform_data/mtd-nand-omap2.h
+++ b/include/linux/platform_data/mtd-nand-omap2.h
@@ -18,6 +18,11 @@ enum nand_io {
NAND_OMAP_PREFETCH_IRQ /* prefetch enabled irq mode */
};
+enum nand_bussize {
+ NAND_OMAP_BUS_8,
+ NAND_OMAP_BUS_16,
+};
+
struct omap_nand_platform_data {
int cs;
struct mtd_partition *parts;
@@ -25,7 +30,7 @@ struct omap_nand_platform_data {
int nr_parts;
bool dev_ready;
enum nand_io xfer_type;
- int devsize;
+ enum nand_bussize bussize;
enum omap_ecc ecc_opt;
struct gpmc_nand_regs reg;
};
--
1.7.10.4
--
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