summaryrefslogtreecommitdiffstats
path: root/drivers/memory
diff options
context:
space:
mode:
authorPaul Cercueil <paul@crapouillou.net>2019-06-04 16:30:18 +0200
committerPaul Burton <paul.burton@mips.com>2019-06-11 15:46:14 -0700
commitfcbc3b104d822e6bad6cde1f33067b525ded6364 (patch)
tree616055b38c05603dfd51a743210af5fec6b298da /drivers/memory
parentd7d14ccfe29a0eeecca3b2ca33fa15184a19888a (diff)
downloadlinux-fcbc3b104d822e6bad6cde1f33067b525ded6364.tar.bz2
memory: jz4780_nemc: Add support for the JZ4740
Add support for the JZ4740 SoC from Ingenic. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Reviewed-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Paul Burton <paul.burton@mips.com>
Diffstat (limited to 'drivers/memory')
-rw-r--r--drivers/memory/jz4780-nemc.c24
1 files changed, 21 insertions, 3 deletions
diff --git a/drivers/memory/jz4780-nemc.c b/drivers/memory/jz4780-nemc.c
index bcf06adefc96..594dde78ed20 100644
--- a/drivers/memory/jz4780-nemc.c
+++ b/drivers/memory/jz4780-nemc.c
@@ -44,9 +44,14 @@
#define NEMC_NFCSR_NFCEn(n) BIT((((n) - 1) << 1) + 1)
#define NEMC_NFCSR_TNFEn(n) BIT(16 + (n) - 1)
+struct jz_soc_info {
+ u8 tas_tah_cycles_max;
+};
+
struct jz4780_nemc {
spinlock_t lock;
struct device *dev;
+ const struct jz_soc_info *soc_info;
void __iomem *base;
struct clk *clk;
uint32_t clk_period;
@@ -202,7 +207,7 @@ static bool jz4780_nemc_configure_bank(struct jz4780_nemc *nemc,
if (of_property_read_u32(node, "ingenic,nemc-tAS", &val) == 0) {
smcr &= ~NEMC_SMCR_TAS_MASK;
cycles = jz4780_nemc_ns_to_cycles(nemc, val);
- if (cycles > 15) {
+ if (cycles > nemc->soc_info->tas_tah_cycles_max) {
dev_err(nemc->dev, "tAS %u is too high (%u cycles)\n",
val, cycles);
return false;
@@ -214,7 +219,7 @@ static bool jz4780_nemc_configure_bank(struct jz4780_nemc *nemc,
if (of_property_read_u32(node, "ingenic,nemc-tAH", &val) == 0) {
smcr &= ~NEMC_SMCR_TAH_MASK;
cycles = jz4780_nemc_ns_to_cycles(nemc, val);
- if (cycles > 15) {
+ if (cycles > nemc->soc_info->tas_tah_cycles_max) {
dev_err(nemc->dev, "tAH %u is too high (%u cycles)\n",
val, cycles);
return false;
@@ -278,6 +283,10 @@ static int jz4780_nemc_probe(struct platform_device *pdev)
if (!nemc)
return -ENOMEM;
+ nemc->soc_info = device_get_match_data(dev);
+ if (!nemc->soc_info)
+ return -EINVAL;
+
spin_lock_init(&nemc->lock);
nemc->dev = dev;
@@ -370,8 +379,17 @@ static int jz4780_nemc_remove(struct platform_device *pdev)
return 0;
}
+static const struct jz_soc_info jz4740_soc_info = {
+ .tas_tah_cycles_max = 7,
+};
+
+static const struct jz_soc_info jz4780_soc_info = {
+ .tas_tah_cycles_max = 15,
+};
+
static const struct of_device_id jz4780_nemc_dt_match[] = {
- { .compatible = "ingenic,jz4780-nemc" },
+ { .compatible = "ingenic,jz4740-nemc", .data = &jz4740_soc_info, },
+ { .compatible = "ingenic,jz4780-nemc", .data = &jz4780_soc_info, },
{},
};