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BY1PR03MB1513; 5:Zai1VgloZ5Fc3lwJZQMz0Kb0/5XcTxlMxZkp63O/8R5OYjSgGMnE4npQI8pJiiNVGKfuJ50RvEf7S7ctVj7LVSx0LIE0dKVNkr5iiz90zqeXOQFl5DxTOqLjR1206ConRqaJcGVuZGH9mnRuS6PHnA==; 24:oo/k4zACthdss26+FzIiWjxMLQajfhR/8l9EIVAo29c0YWoy/OJC8h9QNimhhkQxQB+P4B32kArMd59CR5hn+MnloMNNRHTWfvVWNqeghxo=; 20:RXDvDGE744fwkIfAFBDkd0q+GLgyoBhXn+6sGibDqYwQDzyPSQHm5bq9DjIPJl5ffLLzOWsil9T5CBh7xvG52ZPqZvQG2VQALJXBt53ChV+XE2mcT4ZK3joLtTfjNBpeHQOUEzlhS6Ogd9aoNwhFCFmwbXr4ZFTlLWnW9Q6i+ZU= X-OriginatorOrg: opensource.altera.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Jan 2016 21:53:19.0777 (UTC) X-MS-Exchange-CrossTenant-Id: fbd72e03-d4a5-4110-adce-614d51f2077a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=fbd72e03-d4a5-4110-adce-614d51f2077a; Ip=[66.35.236.236]; Helo=[sj-itexedge04.altera.priv.altera.com] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY1PR03MB1513 Cc: marex@denx.de, pavel@denx.de, clsee@altera.com, u-boot@lists.denx.de, sr@denx.de, tfchee@altera.com Subject: [U-Boot] [PATCH 2/2] net: phy: micrel: fix divisor value for KSZ9031 phy skew X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.15 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" From: Dinh Nguyen The picoseconds to register value divisor(ps_to_regval) should be 60 and not 200. Linux has KSZ9031_PS_TO_REG defined to be 60 as well. 60 is the correct divisor because the 4-bit skew values are defined from 0x0000(-420ps) to 0xffff(480ps), increments of 60. For example, a DTS skew value of 420, represents 0ps delay, which should be 0x7. With the previous divisor of 200, it would result in 0x2, which represents a -300ps delay. With this patch, ethernet on the SoCFPGA DE0 Atlas is now able to work with 1Gb ethernet. References: http://www.micrel.com/_PDF/Ethernet/datasheets/KSZ9031RNX.pdf -> page 26 Signed-off-by: Dinh Nguyen Acked-by: Marek Vasut Acked-by: Joe Hershberger --- drivers/net/phy/micrel.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c index 19b6bc7..2530a5b 100644 --- a/drivers/net/phy/micrel.c +++ b/drivers/net/phy/micrel.c @@ -211,7 +211,7 @@ static int ksz90x1_of_config_group(struct phy_device *phydev, { struct udevice *dev = phydev->dev; struct phy_driver *drv = phydev->drv; - const int ps_to_regval = 200; + const int ps_to_regval = 60; int val[4]; int i, changed = 0, offset, max; u16 regval = 0;