From f845a027de66d1efeb8cb22020e2c50baebdc441 Mon Sep 17 00:00:00 2001 From: Parthiban Veerasooran Date: Mon, 9 Sep 2024 13:55:08 +0530 Subject: [PATCH] net: ethernet: oa_tc6: enable open alliance tc6 data communication 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 Signed-off-by: Parthiban Veerasooran Link: https://patch.msgid.link/20240909082514.262942-9-Parthiban.Veerasooran@microchip.com Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/oa_tc6.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/drivers/net/ethernet/oa_tc6.c b/drivers/net/ethernet/oa_tc6.c index fc276d881dc9..8958af863b6e 100644 --- a/drivers/net/ethernet/oa_tc6.c +++ b/drivers/net/ethernet/oa_tc6.c @@ -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); -- 2.25.1