Skip to content

L
linux
Commit 7e7c7df5 authored by Álvaro Fernández Rojas's avatar Álvaro Fernández Rojas Committed by Miquel Raynal
Browse files
Options

mtd: rawnand: brcmnand: support v2.1-v2.2 controllers 

v2.1: tested on Netgear DGND3700v1 (BCM6368)
v2.2: tested on Netgear DGND3700v2 (BCM6362)
Signed-off-by: default avatarÁlvaro Fernández Rojas <noltari@gmail.com>
Acked-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: default avatarMiquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20200522121524.4161539-6-noltari@gmail.com
parent b1713b5b
Hide whitespace changes
Inline Side-by-side
Showing with 76 additions and 9 deletions
drivers/mtd/nand/raw/brcmnand/brcmnand.c
View file @ 7e7c7df5
......@@ -263,6 +263,7 @@ struct brcmnand_controller {
const unsigned int *block_sizes;
unsigned int max_page_size;
const unsigned int *page_sizes;
unsigned int page_size_shift;
unsigned int max_oob;
u32 features;
......@@ -337,6 +338,36 @@ enum brcmnand_reg {
BRCMNAND_FC_BASE,
};
/* BRCMNAND v2.1-v2.2 */
static const u16 brcmnand_regs_v21[] = {
[BRCMNAND_CMD_START] = 0x04,
[BRCMNAND_CMD_EXT_ADDRESS] = 0x08,
[BRCMNAND_CMD_ADDRESS] = 0x0c,
[BRCMNAND_INTFC_STATUS] = 0x5c,
[BRCMNAND_CS_SELECT] = 0x14,
[BRCMNAND_CS_XOR] = 0x18,
[BRCMNAND_LL_OP] = 0,
[BRCMNAND_CS0_BASE] = 0x40,
[BRCMNAND_CS1_BASE] = 0,
[BRCMNAND_CORR_THRESHOLD] = 0,
[BRCMNAND_CORR_THRESHOLD_EXT] = 0,
[BRCMNAND_UNCORR_COUNT] = 0,
[BRCMNAND_CORR_COUNT] = 0,
[BRCMNAND_CORR_EXT_ADDR] = 0x60,
[BRCMNAND_CORR_ADDR] = 0x64,
[BRCMNAND_UNCORR_EXT_ADDR] = 0x68,
[BRCMNAND_UNCORR_ADDR] = 0x6c,
[BRCMNAND_SEMAPHORE] = 0x50,
[BRCMNAND_ID] = 0x54,
[BRCMNAND_ID_EXT] = 0,
[BRCMNAND_LL_RDATA] = 0,
[BRCMNAND_OOB_READ_BASE] = 0x20,
[BRCMNAND_OOB_READ_10_BASE] = 0,
[BRCMNAND_OOB_WRITE_BASE] = 0x30,
[BRCMNAND_OOB_WRITE_10_BASE] = 0,
[BRCMNAND_FC_BASE] = 0x200,
};
/* BRCMNAND v3.3-v4.0 */
static const u16 brcmnand_regs_v33[] = {
[BRCMNAND_CMD_START] = 0x04,
......@@ -535,6 +566,9 @@ enum {
CFG_BUS_WIDTH = BIT(CFG_BUS_WIDTH_SHIFT),
CFG_DEVICE_SIZE_SHIFT = 24,
/* Only for v2.1 */
CFG_PAGE_SIZE_SHIFT_v2_1 = 30,
/* Only for pre-v7.1 (with no CFG_EXT register) */
CFG_PAGE_SIZE_SHIFT = 20,
CFG_BLK_SIZE_SHIFT = 28,
......@@ -570,12 +604,16 @@ static int brcmnand_revision_init(struct brcmnand_controller *ctrl)
{
static const unsigned int block_sizes_v6[] = { 8, 16, 128, 256, 512, 1024, 2048, 0 };
static const unsigned int block_sizes_v4[] = { 16, 128, 8, 512, 256, 1024, 2048, 0 };
static const unsigned int block_sizes_v2_2[] = { 16, 128, 8, 512, 256, 0 };
static const unsigned int block_sizes_v2_1[] = { 16, 128, 8, 512, 0 };
static const unsigned int page_sizes_v3_4[] = { 512, 2048, 4096, 8192, 0 };
static const unsigned int page_sizes_v2_2[] = { 512, 2048, 4096, 0 };
static const unsigned int page_sizes_v2_1[] = { 512, 2048, 0 };
ctrl->nand_version = nand_readreg(ctrl, 0) & 0xffff;
/* Only support v4.0+? */
if (ctrl->nand_version < 0x0400) {
/* Only support v2.1+ */
if (ctrl->nand_version < 0x0201) {
dev_err(ctrl->dev, "version %#x not supported\n",
ctrl->nand_version);
return -ENODEV;
......@@ -592,6 +630,8 @@ static int brcmnand_revision_init(struct brcmnand_controller *ctrl)
ctrl->reg_offsets = brcmnand_regs_v50;
else if (ctrl->nand_version >= 0x0303)
ctrl->reg_offsets = brcmnand_regs_v33;
else if (ctrl->nand_version >= 0x0201)
ctrl->reg_offsets = brcmnand_regs_v21;
/* Chip-select stride */
if (ctrl->nand_version >= 0x0701)
......@@ -617,14 +657,32 @@ static int brcmnand_revision_init(struct brcmnand_controller *ctrl)
ctrl->max_page_size = 16 * 1024;
ctrl->max_block_size = 2 * 1024 * 1024;
} else {
ctrl->page_sizes = page_sizes_v3_4;
if (ctrl->nand_version >= 0x0304)
ctrl->page_sizes = page_sizes_v3_4;
else if (ctrl->nand_version >= 0x0202)
ctrl->page_sizes = page_sizes_v2_2;
else
ctrl->page_sizes = page_sizes_v2_1;
if (ctrl->nand_version >= 0x0202)
ctrl->page_size_shift = CFG_PAGE_SIZE_SHIFT;
else
ctrl->page_size_shift = CFG_PAGE_SIZE_SHIFT_v2_1;
if (ctrl->nand_version >= 0x0600)
ctrl->block_sizes = block_sizes_v6;
else
else if (ctrl->nand_version >= 0x0400)
ctrl->block_sizes = block_sizes_v4;
else if (ctrl->nand_version >= 0x0202)
ctrl->block_sizes = block_sizes_v2_2;
else
ctrl->block_sizes = block_sizes_v2_1;
if (ctrl->nand_version < 0x0400) {
ctrl->max_page_size = 4096;
if (ctrl->nand_version < 0x0202)
ctrl->max_page_size = 2048;
else
ctrl->max_page_size = 4096;
ctrl->max_block_size = 512 * 1024;
}
}
......@@ -810,6 +868,9 @@ static void brcmnand_wr_corr_thresh(struct brcmnand_host *host, u8 val)
enum brcmnand_reg reg = BRCMNAND_CORR_THRESHOLD;
int cs = host->cs;
if (!ctrl->reg_offsets[reg])
return;
if (ctrl->nand_version == 0x0702)
bits = 7;
else if (ctrl->nand_version >= 0x0600)
......@@ -868,8 +929,10 @@ static inline u32 brcmnand_spare_area_mask(struct brcmnand_controller *ctrl)
return GENMASK(7, 0);
else if (ctrl->nand_version >= 0x0600)
return GENMASK(6, 0);
else
else if (ctrl->nand_version >= 0x0303)
return GENMASK(5, 0);
else
return GENMASK(4, 0);
}
#define NAND_ACC_CONTROL_ECC_SHIFT 16
......@@ -2380,7 +2443,7 @@ static int brcmnand_set_cfg(struct brcmnand_host *host,
(!!(cfg->device_width == 16) << CFG_BUS_WIDTH_SHIFT) |
(device_size << CFG_DEVICE_SIZE_SHIFT);
if (cfg_offs == cfg_ext_offs) {
tmp |= (page_size << CFG_PAGE_SIZE_SHIFT) |
tmp |= (page_size << ctrl->page_size_shift) |
(block_size << CFG_BLK_SIZE_SHIFT);
nand_writereg(ctrl, cfg_offs, tmp);
} else {
......@@ -2392,9 +2455,11 @@ static int brcmnand_set_cfg(struct brcmnand_host *host,
tmp = nand_readreg(ctrl, acc_control_offs);
tmp &= ~brcmnand_ecc_level_mask(ctrl);
tmp |= cfg->ecc_level << NAND_ACC_CONTROL_ECC_SHIFT;
tmp &= ~brcmnand_spare_area_mask(ctrl);
tmp |= cfg->spare_area_size;
if (ctrl->nand_version >= 0x0302) {
tmp |= cfg->ecc_level << NAND_ACC_CONTROL_ECC_SHIFT;
tmp |= cfg->spare_area_size;
}
nand_writereg(ctrl, acc_control_offs, tmp);
brcmnand_set_sector_size_1k(host, cfg->sector_size_1k);
......@@ -2768,6 +2833,8 @@ const struct dev_pm_ops brcmnand_pm_ops = {
EXPORT_SYMBOL_GPL(brcmnand_pm_ops);
static const struct of_device_id brcmnand_of_match[] = {
{ .compatible = "brcm,brcmnand-v2.1" },
{ .compatible = "brcm,brcmnand-v2.2" },
{ .compatible = "brcm,brcmnand-v4.0" },
{ .compatible = "brcm,brcmnand-v5.0" },
{ .compatible = "brcm,brcmnand-v6.0" },
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7