diff options
Diffstat (limited to 'target/linux/mediatek/patches-4.14/0044-net-next-dsa-mediatek-tell-GDMA-when-we-are-turning-.patch')
| -rw-r--r-- | target/linux/mediatek/patches-4.14/0044-net-next-dsa-mediatek-tell-GDMA-when-we-are-turning-.patch | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches-4.14/0044-net-next-dsa-mediatek-tell-GDMA-when-we-are-turning-.patch b/target/linux/mediatek/patches-4.14/0044-net-next-dsa-mediatek-tell-GDMA-when-we-are-turning-.patch new file mode 100644 index 0000000000..51204d4001 --- /dev/null +++ b/target/linux/mediatek/patches-4.14/0044-net-next-dsa-mediatek-tell-GDMA-when-we-are-turning-.patch @@ -0,0 +1,43 @@ +From 6a5932028a4f3217ed7c9d602f269611d95dd8ca Mon Sep 17 00:00:00 2001 +From: John Crispin <john@phrozen.org> +Date: Wed, 9 Aug 2017 15:13:19 +0200 +Subject: [PATCH 44/57] net-next: dsa: mediatek: tell GDMA when we are turning + on the special tag + +Enabling this bit will make the RX DMA descriptor enable the SP bit for all +ingress traffic inside the return descriptor. The PPE needs this to know +that a SP is present. + +Signed-off-by: John Crispin <john@phrozen.org> +--- + drivers/net/dsa/mt7530.c | 5 +++++ + drivers/net/dsa/mt7530.h | 4 ++++ + 2 files changed, 9 insertions(+) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -742,6 +742,11 @@ mt7530_cpu_port_enable(struct mt7530_pri + mt7530_write(priv, MT7530_PVC_P(port), + PORT_SPEC_TAG); + ++ /* Enable Mediatek header mode on the GMAC that the cpu port ++ * connects to */ ++ regmap_write_bits(priv->ethernet, MTK_GDMA_FWD_CFG(port), ++ GDMA_SPEC_TAG, GDMA_SPEC_TAG); ++ + /* Setup the MAC by default for the cpu port */ + mt7530_write(priv, MT7530_PMCR_P(port), PMCR_CPUP_LINK); + +--- a/drivers/net/dsa/mt7530.h ++++ b/drivers/net/dsa/mt7530.h +@@ -22,6 +22,10 @@ + + #define TRGMII_BASE(x) (0x10000 + (x)) + ++/* Registers for GDMA configuration access */ ++#define MTK_GDMA_FWD_CFG(x) (0x500 + (x * 0x1000)) ++#define GDMA_SPEC_TAG BIT(24) ++ + /* Registers to ethsys access */ + #define ETHSYS_CLKCFG0 0x2c + #define ETHSYS_TRGMII_CLK_SEL362_5 BIT(11) |