spi: tegra114: use packed mode for 32 bits per word
authorSowjanya Komatineni <skomatineni@nvidia.com>
Wed, 27 Mar 2019 05:56:25 +0000 (22:56 -0700)
committerMark Brown <broonie@kernel.org>
Mon, 1 Apr 2019 08:48:59 +0000 (15:48 +0700)
Fixes: Use packed mode for 32 bits per word transfers to increase
performance as each packet is a full 32-bit word.

Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
drivers/spi/spi-tegra114.c

index a76acedd7e2f402190a3525804cc012770747fc7..929358e3487a83459fb0cd03fbfcce7e7919f270 100644 (file)
@@ -259,7 +259,7 @@ static unsigned tegra_spi_calculate_curr_xfer_param(
 
        tspi->bytes_per_word = DIV_ROUND_UP(bits_per_word, 8);
 
-       if (bits_per_word == 8 || bits_per_word == 16) {
+       if (bits_per_word == 8 || bits_per_word == 16 || bits_per_word == 32) {
                tspi->is_packed = 1;
                tspi->words_per_32bit = 32/bits_per_word;
        } else {