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net: ethernet: oa_tc6: enable open alliance tc6 data communication

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Enabling Configuration Synchronization bit (SYNC) in the Configuration
Register #0 enables data communication in the MAC-PHY. The state of this
bit is reflected in the data footer SYNC bit.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Parthiban Veerasooran <Parthiban.Veerasooran@microchip.com>
Link: https://patch.msgid.link/20240909082514.262942-9-Parthiban.Veerasooran@microchip.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Parthiban Veerasooran 2024-09-09 13:55:08 +05:30 committed by Jakub Kicinski
parent 18a918762f
commit f845a027de
1 changed files with 30 additions and 0 deletions
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30
drivers/net/ethernet/oa_tc6.c
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@ -20,6 +20,10 @@
#define OA_TC6_REG_RESET 0x0003
#define RESET_SWRESET BIT(0) /* Software Reset */
/* Configuration Register #0 */
#define OA_TC6_REG_CONFIG0 0x0004
#define CONFIG0_SYNC BIT(15)
/* Status Register #0 */
#define OA_TC6_REG_STATUS0 0x0008
#define STATUS0_RESETC BIT(6) /* Reset Complete */
@ -559,6 +563,21 @@ static int oa_tc6_unmask_macphy_error_interrupts(struct oa_tc6 *tc6)
return oa_tc6_write_register(tc6, OA_TC6_REG_INT_MASK0, regval);
}
static int oa_tc6_enable_data_transfer(struct oa_tc6 *tc6)
{
u32 value;
int ret;
ret = oa_tc6_read_register(tc6, OA_TC6_REG_CONFIG0, &value);
if (ret)
return ret;
/* Enable configuration synchronization for data transfer */
value |= CONFIG0_SYNC;
return oa_tc6_write_register(tc6, OA_TC6_REG_CONFIG0, value);
}
/**
* oa_tc6_init - allocates and initializes oa_tc6 structure.
* @spi: device with which data will be exchanged.
@ -618,7 +637,18 @@ struct oa_tc6 *oa_tc6_init(struct spi_device *spi, struct net_device *netdev)
return NULL;
}
ret = oa_tc6_enable_data_transfer(tc6);
if (ret) {
dev_err(&tc6->spi->dev, "Failed to enable data transfer: %d\n",
ret);
goto phy_exit;
}
return tc6;
phy_exit:
oa_tc6_phy_exit(tc6);
return NULL;
}
EXPORT_SYMBOL_GPL(oa_tc6_init);