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SubjectApplied "spi: tegra114: fix PIO transfer" to the spi tree
The patch

spi: tegra114: fix PIO transfer

has been applied to the spi tree at for-5.1

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
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From 3f6e3f7843a6a1667ed890ca51a1388fc7bf3429 Mon Sep 17 00:00:00 2001
From: Sowjanya Komatineni <>
Date: Mon, 15 Apr 2019 14:30:26 -0700
Subject: [PATCH] spi: tegra114: fix PIO transfer

This patch fixes PIO mode transfer to use PIO bit in SPI_COMMAND1 register.
Current driver uses DMA_EN instead of PIO bit.

Signed-off-by: Sowjanya Komatineni <>
Signed-off-by: Mark Brown <>
drivers/spi/spi-tegra114.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/spi/spi-tegra114.c b/drivers/spi/spi-tegra114.c
index b57f10182fae..21e4fdad013f 100644
--- a/drivers/spi/spi-tegra114.c
+++ b/drivers/spi/spi-tegra114.c
@@ -641,8 +641,9 @@ static int tegra_spi_start_cpu_based_transfer(

tspi->is_curr_dma_xfer = false;

- val |= SPI_DMA_EN;
- tegra_spi_writel(tspi, val, SPI_DMA_CTL);
+ val = tspi->command1_reg;
+ val |= SPI_PIO;
+ tegra_spi_writel(tspi, val, SPI_COMMAND1);
return 0;

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