diff mbox series

[v2,6/6] spi: spi-sun4i: sun4i_spi_transfer_one(): report effectively used speed_hz of transfer

Message ID 20260907-spi-sun4i-fixes-v2-6-7e805662b9bd@pengutronix.de (mailing list archive)
State New
Headers
Series spi: spi-sun4i: assorted fixes |

Commit Message

Jonas Rebmann Sept. 7, 2026, 3:31 p.m. UTC 
From: Marc Kleine-Budde <mkl@pengutronix.de>

Report the effectively used speed_hz for the transfer by setting
tfr->effective_speed_hz.

For more information see commit 5d7e2b5ed585 ("spi: core: allow
reporting the effectivly used speed_hz for a transfer"), which adds this
feature to the SPI core.

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Jonas Rebmann <jre@pengutronix.de>
---
 drivers/spi/spi-sun4i.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/drivers/spi/spi-sun4i.c b/drivers/spi/spi-sun4i.c
index 94e1c7bbd632..59941b38b757 100644
--- a/drivers/spi/spi-sun4i.c
+++ b/drivers/spi/spi-sun4i.c
@@ -310,9 +310,11 @@  static int sun4i_spi_transfer_one(struct spi_controller *host,
 	div_cdr2 = DIV_ROUND_UP(div_cdr1, 2);
 	if (div_cdr2 <= (SUN4I_CLK_CTL_CDR2_MASK + 1)) {
 		reg = SUN4I_CLK_CTL_CDR2(div_cdr2 - 1) | SUN4I_CLK_CTL_DRS;
+		tfr->effective_speed_hz = mclk_rate / (2 * div_cdr2);
 	} else {
 		div = min(SUN4I_CLK_CTL_CDR1_MASK + 1, order_base_2(div_cdr1));
 		reg = SUN4I_CLK_CTL_CDR1(div - 1);
+		tfr->effective_speed_hz = mclk_rate / (1 << div);
 	}
 
 	sun4i_spi_write(sspi, SUN4I_CLK_CTL_REG, reg);