diff options
| author | Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> | 2026-07-27 11:34:46 +0100 |
|---|---|---|
| committer | Krzysztof Kozlowski <krzk@kernel.org> | 2026-09-01 17:38:32 +0200 |
| commit | 008a7b9631864b708ffc06d42264aeef09f09800 (patch) | |
| tree | 4eb6b922787b2846cc1b6a380942eddf5631a1df /drivers/memory | |
| parent | 12e44bfc2a0e97f139c37b33925cd49d1621fa91 (diff) | |
memory: renesas-rpc-if: Consolidate XSPI_CDTBUF0 updates in write path
Program the XSPI_CDTBUF0 TRTYPE, DATASIZE and ADDSIZE fields with a
single regmap_update_bits() call in the RPCIF_DATA_OUT transfer path.
The existing code updates these fields through three separate
read-modify-write operations even though all values are known before the
transfer request is issued. Combine the updates into a single register
access to reduce overhead and simplify the configuration sequence.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://patch.msgid.link/20260727103449.3188105-4-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Diffstat (limited to 'drivers/memory')
| -rw-r--r-- | drivers/memory/renesas-rpc-if.c | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/drivers/memory/renesas-rpc-if.c b/drivers/memory/renesas-rpc-if.c index 50294e5d2bf5..e406afc42616 100644 --- a/drivers/memory/renesas-rpc-if.c +++ b/drivers/memory/renesas-rpc-if.c @@ -660,17 +660,12 @@ static int xspi_manual_xfer_impl(struct rpcif_priv *xspi) u32 bytes_left = xspi->xferlen - pos; u32 nbytes, data[2], *p = data; - regmap_update_bits(xspi->regmap, XSPI_CDTBUF0, - XSPI_CDTBUF_TRTYPE, XSPI_CDTBUF_TRTYPE); - nbytes = bytes_left >= max ? max : bytes_left; regmap_update_bits(xspi->regmap, XSPI_CDTBUF0, - XSPI_CDTBUF_DATASIZE(0xf), - XSPI_CDTBUF_DATASIZE(nbytes)); - - regmap_update_bits(xspi->regmap, XSPI_CDTBUF0, + XSPI_CDTBUF_TRTYPE | XSPI_CDTBUF_DATASIZE(0xf) | XSPI_CDTBUF_ADDSIZE(0x7), + XSPI_CDTBUF_TRTYPE | XSPI_CDTBUF_DATASIZE(nbytes) | XSPI_CDTBUF_ADDSIZE(xspi->addr_nbytes)); memcpy(data, xspi->buffer + pos, nbytes); |