layerscape: add patches-5.4

[openwrt/staging/wigyori.git] / target / linux / layerscape / patches-5.4 / 701-net-0302-staging-fsl_ppfe-eth-remove-jumbo-frame-enable-from-.patch

diff --git a/target/linux/layerscape/patches-5.4/701-net-0302-staging-fsl_ppfe-eth-remove-jumbo-frame-enable-from-.patch b/target/linux/layerscape/patches-5.4/701-net-0302-staging-fsl_ppfe-eth-remove-jumbo-frame-enable-from-.patch
new file mode 100644 (file)
index 0000000..a98c551
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/701-net-0302-staging-fsl_ppfe-eth-remove-jumbo-frame-enable-from-.patch
@@ -0,0 +1,46 @@
+From 162c09cee1b5b00e09fd99273fd2f8c460c0d989 Mon Sep 17 00:00:00 2001
+From: Calvin Johnson <calvin.johnson@nxp.com>
+Date: Wed, 20 Jun 2018 10:23:16 +0530
+Subject: [PATCH] staging: fsl_ppfe/eth: remove jumbo frame enable from gemac
+ init
+
+MAC Receive Control Register was configured to allow jumbo frames.
+This is removed as jumbo frames can be supported anytime by changing
+mtu which will in turn modify MAX_FL field of MAC RCR.
+Jumbo frames caused pfe to hang on LS1012A rev 1.0 Silicon due to
+erratum A-010897.
+
+Signed-off-by: Calvin Johnson <calvin.johnson@nxp.com>
+---
+ drivers/staging/fsl_ppfe/pfe_eth.c | 1 -
+ drivers/staging/fsl_ppfe/pfe_hal.c | 9 ---------
+ 2 files changed, 10 deletions(-)
+
+--- a/drivers/staging/fsl_ppfe/pfe_eth.c
++++ b/drivers/staging/fsl_ppfe/pfe_eth.c
+@@ -1272,7 +1272,6 @@ static int pfe_gemac_init(struct pfe_eth
+       gemac_set_config(priv->EMAC_baseaddr, &cfg);
+       gemac_allow_broadcast(priv->EMAC_baseaddr);
+       gemac_enable_1536_rx(priv->EMAC_baseaddr);
+-      gemac_enable_rx_jmb(priv->EMAC_baseaddr);
+       gemac_enable_stacked_vlan(priv->EMAC_baseaddr);
+       gemac_enable_pause_rx(priv->EMAC_baseaddr);
+       gemac_set_bus_width(priv->EMAC_baseaddr, 64);
+--- a/drivers/staging/fsl_ppfe/pfe_hal.c
++++ b/drivers/staging/fsl_ppfe/pfe_hal.c
+@@ -1028,15 +1028,6 @@ void gemac_set_rx_max_fl(void *base, int
+               | (mtu << 16), base + EMAC_RCNTRL_REG);
+ }
+ 
+-/* GEMAC enable jumbo function.
+- * @param[in] base    GEMAC base address
+- */
+-void gemac_enable_rx_jmb(void *base)
+-{
+-      writel((readl(base + EMAC_RCNTRL_REG) & PFE_RCR_MAX_FL_MASK)
+-              | (JUMBO_FRAME_SIZE << 16), base + EMAC_RCNTRL_REG);
+-}
+-
+ /* GEMAC enable stacked vlan function.
+  * @param[in] base    GEMAC base address
+  */