[PATCH v3 0/2] net: stmmac: correct MAC propagation delay

From: Johannes Zink
Date: Tue Aug 01 2023 - 11:45:28 EST

Changes in v3:
- work in Richard's review feedback. Thank you for reviewing my patch:
- as some of the hardware may have no or invalid correction value
registers: introduce feature switch which can be enabled in the glue
code drivers depending on the actual hardware support
- only enable the feature on the i.MX8MP for the time being, as the patch
improves timing accuracy and is tested for this hardware
- Link to v2: https://lore.kernel.org/r/20230719-stmmac_correct_mac_delay-v2-1-3366f38ee9a6@xxxxxxxxxxxxxx

Changes in v2:
- fix builds for 32bit, this was found by the kernel build bot
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202307200225.B8rmKQPN-lkp@xxxxxxxxx/
- while at it also fix an overflow by shifting a u32 constant from macro by 10bits
by casting the constant to u64
- Link to v1: https://lore.kernel.org/r/20230719-stmmac_correct_mac_delay-v1-1-768aa4d09334@xxxxxxxxxxxxxx

Johannes Zink (2):
net: stmmac: correct MAC propagation delay
net: stmmac: dwmac-imx: enable MAC propagation delay correction for i.MX8MP

drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c | 5 +++
drivers/net/ethernet/stmicro/stmmac/hwif.h | 3 ++
.../net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c | 43 ++++++++++++++++++++++
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 6 +++
drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.h | 6 +++
include/linux/stmmac.h | 1 +
6 files changed, 64 insertions(+)
base-commit: 01e6f8ad8d26ced14b0cf288c42e55d03a7c5070
change-id: 20230719-stmmac_correct_mac_delay-4278cb9d9bc1

Best regards,
Johannes Zink <j.zink@xxxxxxxxxxxxxx>