memory: pl172: add ARM PrimeCell PL176 MPMC support (f6d77bee) · Commits · 戴 / test

The change adds support of ARM PrimeCell PL176 MPMC. Static memory configuration of PL175 MPMC is very similar to one found on PL172 and PL175 controllers, so it is preferred to add its support into the existing driver. The difference is that PL176 supports up to 10 slave ports (but only 4 of them may be connected to static memory devices), AHB master bus width cab be 64-bit wide, also NAND devices can be interfaced. Similar to PL175 contoller, PL176 has no write buffer enable control in static memory configuration register, the rest of static memory configuration bits (with exception of NAND) is the same. Signed-off-by:

Vladimir Zapolskiy <vz@mleia.com> Signed-off-by:

Joachim Eastwood <manabian@gmail.com>

drivers/memory/pl172.c

+9 −0

Original line number	Diff line number	Diff line
		@@ -192,6 +192,7 @@ static int pl172_parse_cs_config(struct amba_device *adev,

		static const char * const pl172_revisions[] = {"r1", "r2", "r2p3", "r2p4"};
		static const char * const pl175_revisions[] = {"r1"};
		static const char * const pl176_revisions[] = {"r0"};

		static int pl172_probe(struct amba_device adev, const struct amba_id id)
		{
		@@ -207,6 +208,9 @@ static int pl172_probe(struct amba_device adev, const struct amba_id id)
		} else if (amba_part(adev) == 0x175) {
		if (amba_rev(adev) < ARRAY_SIZE(pl175_revisions))
		rev = pl175_revisions[amba_rev(adev)];
		} else if (amba_part(adev) == 0x176) {
		if (amba_rev(adev) < ARRAY_SIZE(pl176_revisions))
		rev = pl176_revisions[amba_rev(adev)];
		}

		dev_info(dev, "ARM PL%x revision %s\n", amba_part(adev), rev);
		@@ -293,6 +297,11 @@ static const struct amba_id pl172_ids[] = {
		.id = 0x07041175,
		.mask = 0x3f0fffff,
		},
		/* PrimeCell MPMC PL176 */
		{
		.id = 0x89041176,
		.mask = 0xff0fffff,
		},
		{ 0, 0 },
		};
		MODULE_DEVICE_TABLE(amba, pl172_ids);

Admin message