ARM: rmobile: salvator-x: Add DVFS and PMIC support

Add support for rebooting the board using the ROHM BD9571MWV I2C PMIC,
but keep the CPU reboot option as a fallback.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

diff --git a/board/renesas/salvator-x/salvator-x.c b/board/renesas/salvator-x/salvator-x.c
index 38ff99a..acc541d 100644 (file)
--- a/board/renesas/salvator-x/salvator-x.c
+++ b/board/renesas/salvator-x/salvator-x.c
@@ -50,6 +50,7 @@ void s_init(void)
 #define TMU1_MSTP124           BIT(24) /* non-secure */
 #define SCIF2_MSTP310          BIT(10) /* SCIF2 */
 #define ETHERAVB_MSTP812       BIT(12)
+#define DVFS_MSTP926           BIT(26)
 #define SD0_MSTP314            BIT(14)
 #define SD1_MSTP313            BIT(13)
 #define SD2_MSTP312            BIT(12) /* either MMC0 */
@@ -78,6 +79,10 @@ int board_early_init_f(void)
        writel(0, SD2CKCR);
        writel(0, SD3CKCR);
 
+#if defined(CONFIG_SYS_I2C) && defined(CONFIG_SYS_I2C_SH)
+       /* DVFS for reset */
+       mstp_clrbits_le32(MSTPSR9, SMSTPCR9, DVFS_MSTP926);
+#endif
        return 0;
 }
 
@@ -235,8 +240,12 @@ const struct rmobile_sysinfo sysinfo = {
 
 void reset_cpu(ulong addr)
 {
+#if defined(CONFIG_SYS_I2C) && defined(CONFIG_SYS_I2C_SH)
+       i2c_reg_write(CONFIG_SYS_I2C_POWERIC_ADDR, 0x20, 0x80);
+#else
        /* only CA57 ? */
        writel(RST_CODE, RST_CA57RESCNT);
+#endif
 }
 
 static const struct sh_serial_platdata serial_platdata = {

diff --git a/include/configs/salvator-x.h b/include/configs/salvator-x.h
index b5a98d6..0e5c130 100644 (file)
--- a/include/configs/salvator-x.h
+++ b/include/configs/salvator-x.h
@@ -50,6 +50,18 @@
 #define GICD_BASE      0xF1010000
 #define GICC_BASE      0xF1020000
 
+/* i2c */
+#define CONFIG_SYS_I2C
+#define CONFIG_SYS_I2C_SH
+#define CONFIG_SYS_I2C_SLAVE           0x60
+#define CONFIG_SYS_I2C_SH_NUM_CONTROLLERS      1
+#define CONFIG_SYS_I2C_SH_SPEED0       400000
+#define CONFIG_SH_I2C_DATA_HIGH                4
+#define CONFIG_SH_I2C_DATA_LOW         5
+#define CONFIG_SH_I2C_CLOCK            10000000
+
+#define CONFIG_SYS_I2C_POWERIC_ADDR    0x30
+
 /* SDHI */
 #define CONFIG_SH_SDHI_FREQ            200000000