+// SPDX-License-Identifier: GPL-2.0
/*
* NVIDIA Tegra SPI-SLINK controller
*
* Copyright (c) 2010-2013 NVIDIA Corporation
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
*/
#include <common.h>
DECLARE_GLOBAL_DATA_PTR;
/* COMMAND */
-#define SLINK_CMD_ENB (1 << 31)
-#define SLINK_CMD_GO (1 << 30)
-#define SLINK_CMD_M_S (1 << 28)
-#define SLINK_CMD_CK_SDA (1 << 21)
-#define SLINK_CMD_CS_POL (1 << 13)
-#define SLINK_CMD_CS_VAL (1 << 12)
-#define SLINK_CMD_CS_SOFT (1 << 11)
-#define SLINK_CMD_BIT_LENGTH (1 << 4)
-#define SLINK_CMD_BIT_LENGTH_MASK 0x0000001F
+#define SLINK_CMD_ENB BIT(31)
+#define SLINK_CMD_GO BIT(30)
+#define SLINK_CMD_M_S BIT(28)
+#define SLINK_CMD_IDLE_SCLK_DRIVE_LOW (0 << 24)
+#define SLINK_CMD_IDLE_SCLK_DRIVE_HIGH BIT(24)
+#define SLINK_CMD_IDLE_SCLK_PULL_LOW (2 << 24)
+#define SLINK_CMD_IDLE_SCLK_PULL_HIGH (3 << 24)
+#define SLINK_CMD_IDLE_SCLK_MASK (3 << 24)
+#define SLINK_CMD_CK_SDA BIT(21)
+#define SLINK_CMD_CS_POL BIT(13)
+#define SLINK_CMD_CS_VAL BIT(12)
+#define SLINK_CMD_CS_SOFT BIT(11)
+#define SLINK_CMD_BIT_LENGTH BIT(4)
+#define SLINK_CMD_BIT_LENGTH_MASK GENMASK(4, 0)
/* COMMAND2 */
-#define SLINK_CMD2_TXEN (1 << 30)
-#define SLINK_CMD2_RXEN (1 << 31)
-#define SLINK_CMD2_SS_EN (1 << 18)
+#define SLINK_CMD2_TXEN BIT(30)
+#define SLINK_CMD2_RXEN BIT(31)
+#define SLINK_CMD2_SS_EN BIT(18)
#define SLINK_CMD2_SS_EN_SHIFT 18
-#define SLINK_CMD2_SS_EN_MASK 0x000C0000
-#define SLINK_CMD2_CS_ACTIVE_BETWEEN (1 << 17)
+#define SLINK_CMD2_SS_EN_MASK GENMASK(19, 18)
+#define SLINK_CMD2_CS_ACTIVE_BETWEEN BIT(17)
/* STATUS */
-#define SLINK_STAT_BSY (1 << 31)
-#define SLINK_STAT_RDY (1 << 30)
-#define SLINK_STAT_ERR (1 << 29)
-#define SLINK_STAT_RXF_FLUSH (1 << 27)
-#define SLINK_STAT_TXF_FLUSH (1 << 26)
-#define SLINK_STAT_RXF_OVF (1 << 25)
-#define SLINK_STAT_TXF_UNR (1 << 24)
-#define SLINK_STAT_RXF_EMPTY (1 << 23)
-#define SLINK_STAT_RXF_FULL (1 << 22)
-#define SLINK_STAT_TXF_EMPTY (1 << 21)
-#define SLINK_STAT_TXF_FULL (1 << 20)
-#define SLINK_STAT_TXF_OVF (1 << 19)
-#define SLINK_STAT_RXF_UNR (1 << 18)
-#define SLINK_STAT_CUR_BLKCNT (1 << 15)
+#define SLINK_STAT_BSY BIT(31)
+#define SLINK_STAT_RDY BIT(30)
+#define SLINK_STAT_ERR BIT(29)
+#define SLINK_STAT_RXF_FLUSH BIT(27)
+#define SLINK_STAT_TXF_FLUSH BIT(26)
+#define SLINK_STAT_RXF_OVF BIT(25)
+#define SLINK_STAT_TXF_UNR BIT(24)
+#define SLINK_STAT_RXF_EMPTY BIT(23)
+#define SLINK_STAT_RXF_FULL BIT(22)
+#define SLINK_STAT_TXF_EMPTY BIT(21)
+#define SLINK_STAT_TXF_FULL BIT(20)
+#define SLINK_STAT_TXF_OVF BIT(19)
+#define SLINK_STAT_RXF_UNR BIT(18)
+#define SLINK_STAT_CUR_BLKCNT BIT(15)
/* STATUS2 */
-#define SLINK_STAT2_RXF_FULL_CNT (1 << 16)
-#define SLINK_STAT2_TXF_FULL_CNT (1 << 0)
+#define SLINK_STAT2_RXF_FULL_CNT BIT(16)
+#define SLINK_STAT2_TXF_FULL_CNT BIT(0)
#define SPI_TIMEOUT 1000
#define TEGRA_SPI_MAX_FREQ 52000000
{
struct tegra_spi_platdata *plat = bus->platdata;
const void *blob = gd->fdt_blob;
- int node = bus->of_offset;
+ int node = dev_of_offset(bus);
- plat->base = fdtdec_get_addr(blob, node, "reg");
- plat->periph_id = clock_decode_periph_id(blob, node);
+ plat->base = devfdt_get_addr(bus);
+ plat->periph_id = clock_decode_periph_id(bus);
if (plat->periph_id == PERIPH_ID_NONE) {
debug("%s: could not decode periph id %d\n", __func__,
priv->freq = plat->frequency;
priv->periph_id = plat->periph_id;
+ /* Change SPI clock to correct frequency, PLLP_OUT0 source */
+ clock_start_periph_pll(priv->periph_id, CLOCK_ID_PERIPH,
+ priv->freq);
+
return 0;
}
static int tegra30_spi_set_mode(struct udevice *bus, uint mode)
{
struct tegra30_spi_priv *priv = dev_get_priv(bus);
+ struct spi_regs *regs = priv->regs;
+ u32 reg;
+
+ reg = readl(®s->command);
+
+ /* Set CPOL and CPHA */
+ reg &= ~(SLINK_CMD_IDLE_SCLK_MASK | SLINK_CMD_CK_SDA);
+ if (mode & SPI_CPHA)
+ reg |= SLINK_CMD_CK_SDA;
+
+ if (mode & SPI_CPOL)
+ reg |= SLINK_CMD_IDLE_SCLK_DRIVE_HIGH;
+ else
+ reg |= SLINK_CMD_IDLE_SCLK_DRIVE_LOW;
+
+ writel(reg, ®s->command);
priv->mode = mode;
debug("%s: regs=%p, mode=%d\n", __func__, priv->regs, priv->mode);
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