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net: fsl: Fix busy flag polling register

NXP's mEMAC reference manual, Chapter 6.5.5 "MDIO Ethernet Management
Interface usage", specifies to poll the BSY (0) bit in the CFG/STAT
register to wait until a transaction has finished, not bit 31 in the
data register.

In the Linux kernel, this has already been fixed in commit 26eee0210ad7
("net/fsl: fix a bug in xgmac_mdio").

This patch changes the register in the fman_mdio and fsl_ls_mdio
drivers.

As the MDIO_DATA_BSY define is no longer in use, this patch also removes
its definition from the fsl_memac header.

Signed-off-by: Markus Koch <markus@notsyncing.net>
Reviewed-by: Camelia Groza <camelia.groza@nxp.com>
Markus Koch 2 years ago
parent
commit
eab18b3b06
3 changed files with 3 additions and 4 deletions
  1. 1 1
      drivers/net/fm/memac_phy.c
  2. 2 2
      drivers/net/fsl_ls_mdio.c
  3. 0 1
      include/fsl_memac.h

+ 1 - 1
drivers/net/fm/memac_phy.c

@@ -64,7 +64,7 @@ static int memac_wait_until_done(struct memac_mdio_controller *regs)
 {
 	unsigned int timeout = MAX_NUM_RETRIES;
 
-	while ((memac_in_32(&regs->mdio_data) & MDIO_DATA_BSY) && timeout--)
+	while ((memac_in_32(&regs->mdio_stat) & MDIO_STAT_BSY) && timeout--)
 		;
 
 	if (!timeout) {

+ 2 - 2
drivers/net/fsl_ls_mdio.c

@@ -84,7 +84,7 @@ static int dm_fsl_ls_mdio_read(struct udevice *dev, int addr,
 	memac_out_32(&regs->mdio_ctl, mdio_ctl);
 
 	/* Wait till the MDIO write is complete */
-	while ((memac_in_32(&regs->mdio_data)) & MDIO_DATA_BSY)
+	while ((memac_in_32(&regs->mdio_stat)) & MDIO_STAT_BSY)
 		;
 
 	/* Return all Fs if nothing was there */
@@ -107,7 +107,7 @@ static int dm_fsl_ls_mdio_write(struct udevice *dev, int addr, int devad,
 	memac_out_32(&regs->mdio_data, MDIO_DATA(val));
 
 	/* Wait till the MDIO write is complete */
-	while ((memac_in_32(&regs->mdio_data)) & MDIO_DATA_BSY)
+	while ((memac_in_32(&regs->mdio_stat)) & MDIO_STAT_BSY)
 		;
 
 	return 0;

+ 0 - 1
include/fsl_memac.h

@@ -254,7 +254,6 @@ struct memac_mdio_controller {
 #define MDIO_CTL_READ		(1 << 15)
 
 #define MDIO_DATA(x)		(x & 0xffff)
-#define MDIO_DATA_BSY		(1 << 31)
 
 struct fsl_enet_mac;