diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c
index 00c6a13e1fc3..3d20148bb7d7 100644
--- a/drivers/spi/spi-rockchip.c
+++ b/drivers/spi/spi-rockchip.c
@@ -216,9 +216,9 @@ struct rockchip_spi {
 	struct pinctrl_state *high_speed_state;
 };
 
-static inline void spi_enable_chip(struct rockchip_spi *rs, int enable)
+static inline void spi_enable_chip(struct rockchip_spi *rs, bool enable)
 {
-	writel_relaxed((enable ? 1 : 0), rs->regs + ROCKCHIP_SPI_SSIENR);
+	writel_relaxed((enable ? 1U : 0U), rs->regs + ROCKCHIP_SPI_SSIENR);
 }
 
 static inline void spi_set_clk(struct rockchip_spi *rs, u16 div)
@@ -347,7 +347,7 @@ static int rockchip_spi_unprepare_message(struct spi_master *master,
 {
 	struct rockchip_spi *rs = spi_master_get_devdata(master);
 
-	spi_enable_chip(rs, 0);
+	spi_enable_chip(rs, false);
 
 	return 0;
 }
@@ -387,7 +387,7 @@ static int rockchip_spi_pio_transfer(struct rockchip_spi *rs)
 {
 	int remain = 0;
 
-	spi_enable_chip(rs, 1);
+	spi_enable_chip(rs, true);
 
 	do {
 		if (rs->tx) {
@@ -407,7 +407,7 @@ static int rockchip_spi_pio_transfer(struct rockchip_spi *rs)
 	if (rs->tx)
 		wait_for_idle(rs);
 
-	spi_enable_chip(rs, 0);
+	spi_enable_chip(rs, false);
 
 	return 0;
 }
@@ -421,7 +421,7 @@ static void rockchip_spi_dma_rxcb(void *data)
 
 	rs->state &= ~RXBUSY;
 	if (!(rs->state & TXBUSY)) {
-		spi_enable_chip(rs, 0);
+		spi_enable_chip(rs, false);
 		spi_finalize_current_transfer(rs->master);
 	}
 
@@ -440,7 +440,7 @@ static void rockchip_spi_dma_txcb(void *data)
 
 	rs->state &= ~TXBUSY;
 	if (!(rs->state & RXBUSY)) {
-		spi_enable_chip(rs, 0);
+		spi_enable_chip(rs, false);
 		spi_finalize_current_transfer(rs->master);
 	}
 
@@ -525,7 +525,7 @@ static int rockchip_spi_prepare_dma(struct rockchip_spi *rs)
 		dma_async_issue_pending(rs->dma_rx.ch);
 	}
 
-	spi_enable_chip(rs, 1);
+	spi_enable_chip(rs, true);
 
 	if (txdesc) {
 		spin_lock_irqsave(&rs->lock, flags);
@@ -741,7 +741,7 @@ static int rockchip_spi_probe(struct platform_device *pdev)
 		goto err_disable_apbclk;
 	}
 
-	spi_enable_chip(rs, 0);
+	spi_enable_chip(rs, false);
 
 	rs->type = SSI_MOTO_SPI;
 	rs->master = master;