Re: [PATCH V3 1/7] spi: mediatek: support tick_delay without enhance_timing
From: AngeloGioacchino Del Regno
Date: Mon Mar 07 2022 - 06:07:48 EST
Il 07/03/22 07:52, Leilk Liu ha scritto:
this patch support tick_delay bit[31:30] without enhance_timing feature.
Fixes: f84d866ab43f("spi: mediatek: add tick_delay support")
Signed-off-by: Leilk Liu <leilk.liu@xxxxxxxxxxxx>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
---
drivers/spi/spi-mt65xx.c | 15 ++++++++++++---
1 file changed, 12 insertions(+), 3 deletions(-)
diff --git a/drivers/spi/spi-mt65xx.c b/drivers/spi/spi-mt65xx.c
index bbfeb8046c17..3fd89548ec3c 100644
--- a/drivers/spi/spi-mt65xx.c
+++ b/drivers/spi/spi-mt65xx.c
@@ -43,8 +43,11 @@
#define SPI_CFG1_PACKET_LOOP_OFFSET 8
#define SPI_CFG1_PACKET_LENGTH_OFFSET 16
#define SPI_CFG1_GET_TICK_DLY_OFFSET 29
+#define SPI_CFG1_GET_TICK_DLY_OFFSET_V1 30
#define SPI_CFG1_GET_TICK_DLY_MASK 0xe0000000
+#define SPI_CFG1_GET_TICK_DLY_MASK_V1 0xc0000000
+
#define SPI_CFG1_CS_IDLE_MASK 0xff
#define SPI_CFG1_PACKET_LOOP_MASK 0xff00
#define SPI_CFG1_PACKET_LENGTH_MASK 0x3ff0000
@@ -346,9 +349,15 @@ static int mtk_spi_prepare_message(struct spi_master *master,
/* tick delay */
reg_val = readl(mdata->base + SPI_CFG1_REG);
- reg_val &= ~SPI_CFG1_GET_TICK_DLY_MASK;
- reg_val |= ((chip_config->tick_delay & 0x7)
- << SPI_CFG1_GET_TICK_DLY_OFFSET);
+ if (mdata->dev_comp->enhance_timing) {
+ reg_val &= ~SPI_CFG1_GET_TICK_DLY_MASK;
+ reg_val |= ((chip_config->tick_delay & 0x7)
+ << SPI_CFG1_GET_TICK_DLY_OFFSET);
+ } else {
+ reg_val &= ~SPI_CFG1_GET_TICK_DLY_MASK_V1;
+ reg_val |= ((chip_config->tick_delay & 0x3)
+ << SPI_CFG1_GET_TICK_DLY_OFFSET_V1);
+ }
writel(reg_val, mdata->base + SPI_CFG1_REG);
/* set hw cs timing */