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dm: ram: bmips: add BCM6338/BCM6348 support

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Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Álvaro Fernández Rojas 2017-05-16 18:39:02 +02:00 committed by Daniel Schwierzeck
parent 2165961c37
commit 5a0efcf78a
1 changed files with 31 additions and 0 deletions
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31
drivers/ram/bmips_ram.c
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@ -14,6 +14,16 @@
#include <asm/io.h>
#include <dm/device.h>
#define SDRAM_CFG_REG 0x0
#define SDRAM_CFG_COL_SHIFT 4
#define SDRAM_CFG_COL_MASK (0x3 << SDRAM_CFG_COL_SHIFT)
#define SDRAM_CFG_ROW_SHIFT 6
#define SDRAM_CFG_ROW_MASK (0x3 << SDRAM_CFG_ROW_SHIFT)
#define SDRAM_CFG_32B_SHIFT 10
#define SDRAM_CFG_32B_MASK (1 << SDRAM_CFG_32B_SHIFT)
#define SDRAM_CFG_BANK_SHIFT 13
#define SDRAM_CFG_BANK_MASK (1 << SDRAM_CFG_BANK_SHIFT)
#define MEMC_CFG_REG 0x4
#define MEMC_CFG_32B_SHIFT 1
#define MEMC_CFG_32B_MASK (1 << MEMC_CFG_32B_SHIFT)
@ -50,6 +60,20 @@ static ulong bmips_dram_size(unsigned int cols, unsigned int rows,
return 1 << (cols + rows + is_32b + banks);
}
static ulong bcm6338_get_ram_size(struct bmips_ram_priv *priv)
{
unsigned int cols = 0, rows = 0, is_32b = 0, banks = 0;
u32 val;
val = readl_be(priv->regs + SDRAM_CFG_REG);
rows = (val & SDRAM_CFG_ROW_MASK) >> SDRAM_CFG_ROW_SHIFT;
cols = (val & SDRAM_CFG_COL_MASK) >> SDRAM_CFG_COL_SHIFT;
is_32b = (val & SDRAM_CFG_32B_MASK) ? 1 : 0;
banks = (val & SDRAM_CFG_BANK_MASK) ? 2 : 1;
return bmips_dram_size(cols, rows, is_32b, banks);
}
static ulong bcm6358_get_ram_size(struct bmips_ram_priv *priv)
{
unsigned int cols = 0, rows = 0, is_32b = 0;
@ -82,6 +106,10 @@ static const struct bmips_ram_hw bmips_ram_bcm6328 = {
.get_ram_size = bcm6328_get_ram_size,
};
static const struct bmips_ram_hw bmips_ram_bcm6338 = {
.get_ram_size = bcm6338_get_ram_size,
};
static const struct bmips_ram_hw bmips_ram_bcm6358 = {
.get_ram_size = bcm6358_get_ram_size,
};
@ -90,6 +118,9 @@ static const struct udevice_id bmips_ram_ids[] = {
{
.compatible = "brcm,bcm6328-mc",
.data = (ulong)&bmips_ram_bcm6328,
}, {
.compatible = "brcm,bcm6338-mc",
.data = (ulong)&bmips_ram_bcm6338,
}, {
.compatible = "brcm,bcm6358-mc",
.data = (ulong)&bmips_ram_bcm6358,