drivers: spi: dw: fix dfs offset in HSSI controller

myguitar · cujomalainey · commit 673a2f376535 · 2025-03-26T15:52:11.000-07:00
The DFS(Data Frame Size) is at CTRLR0[4:0] in HSSI controller.

Signed-off-by: Younghyun Park &lt;younghyunpark@google.com&gt;
diff --git a/drivers/spi/spi_dw.c b/drivers/spi/spi_dw.c
@@ -226,7 +226,7 @@ static int spi_dw_configure(const struct device *dev,
 	}
 
 	/* Word size */
-	if (info->max_xfer_size == 32) {
+	if (!IS_ENABLED(CONFIG_SPI_DW_HSSI) && (info->max_xfer_size == 32)) {
 		ctrlr0 |= DW_SPI_CTRLR0_DFS_32(SPI_WORD_SIZE_GET(config->operation));
 	} else {
 		ctrlr0 |= DW_SPI_CTRLR0_DFS_16(SPI_WORD_SIZE_GET(config->operation));

Original file line number	Diff line number	Diff line change
`@@ -226,7 +226,7 @@ static int spi_dw_configure(const struct device *dev,`
`226`	`226`	`}`
`227`	`227`
`228`	`228`	`/* Word size */`
`229`		`- if (info->max_xfer_size == 32) {`
	`229`	`+ if (!IS_ENABLED(CONFIG_SPI_DW_HSSI) && (info->max_xfer_size == 32)) {`
`230`	`230`	`ctrlr0 \|= DW_SPI_CTRLR0_DFS_32(SPI_WORD_SIZE_GET(config->operation));`
`231`	`231`	`} else {`
`232`	`232`	`ctrlr0 \|= DW_SPI_CTRLR0_DFS_16(SPI_WORD_SIZE_GET(config->operation));`