VRFDIG: 1.875 V -> 1.8 V VGEN: 1.5 V -> 1.8 V VDIG: 1.5 V -> 1.3 V Unused PMIC switchers and regulators are disabled
Signed-off-by: Jens Gehrlein sew_s@tqs.de ---
board/tqc/tqma31/tqma31.c | 142 +++++++++++++++++++++++++++++++++++++++++++++ include/configs/TQMA31.h | 2 + 2 files changed, 144 insertions(+), 0 deletions(-)
diff --git a/board/tqc/tqma31/tqma31.c b/board/tqc/tqma31/tqma31.c index c704c41..abb8db0 100644 --- a/board/tqc/tqma31/tqma31.c +++ b/board/tqc/tqma31/tqma31.c @@ -22,6 +22,7 @@
#include <common.h> #include <asm/io.h> +#include <spi.h> #include <asm/arch/mx31.h> #include <asm/arch/mx31-regs.h>
@@ -70,6 +71,132 @@ static void setup_iomux (void) mx31_pad_ctl (PAD_CTL_CSPI2_MOSI, 0); }
+static int adjust_voltages (void) +{ + u32 reg; + u32 val; + static struct spi_slave *slave = NULL; + + slave = spi_setup_slave(1, 0, 1000000, + SPI_MODE_2 | SPI_CS_HIGH); + if (!slave) + return -1; + + if (spi_claim_bus(slave)) + return -1; + + /* Set PMIC arbitration switchers */ + val = 0x000020; + reg = 0x14000000 | val | 0x80000000; + if (spi_xfer(slave, 32, (uchar *)®, (uchar *)&val, + SPI_XFER_BEGIN | SPI_XFER_END)) + return -1; + + /* Set PMIC regulator enable to 0x0 */ + val = 0x000000; + reg = 0x20000000 | val | 0x80000000; + if (spi_xfer(slave, 32, (uchar *)®, (uchar *)&val, + SPI_XFER_BEGIN | SPI_XFER_END)) + return -1; + + /* + * Set PMIC regulator setting 0 + * VRFDIG = 1,8V / reset value = 1,875V + * VGEN = 1,8V / reset value = 1,5V + * VDIG = 1,3V / reset value = 1,5V + */ + val = 0x63cdc; + reg = 0x3c000000 | val | 0x80000000; + if (spi_xfer(slave, 32, (uchar *)®, (uchar *)&val, + SPI_XFER_BEGIN | SPI_XFER_END)) + return -1; + + /* + * Set PMIC regulator mode 0 to 0x24924 + * VAUDIO = on + * VIOH = off + * VIOLO = on + * VDIG = on + * VGEN = on + * VRFDIG = on + * VRFREF = on + * VRFCP = on + */ + val = 0x249241; + reg = 0x40000000 | val | 0x80000000; + if (spi_xfer(slave, 32, (uchar *)®, (uchar *)&val, + SPI_XFER_BEGIN | SPI_XFER_END)) + return -1; + + /* + * Set PMIC regulator mode 1 to 0x0 + * VSIM = off + * VESIM = off + * VCAM = off + * VRFBG = off + * VVIB = off + * VRF1 = off + * VRF2 = off + * VMMC1 = off + * VMMC2 = off + */ + val = 0x0; + reg = 0x42000000 | val | 0x80000000; + if (spi_xfer(slave, 32, (uchar *)®, (uchar *)&val, + SPI_XFER_BEGIN | SPI_XFER_END)) + return -1; + + /* + * FIXME: switcher settings 0 and 1. + * Kernel hangs when unpacking itself. + * Workaround: + * Up to now CPU can operate at maximum allowed voltage 1.6 V. + */ + /* + * Set PMIC switcher setting 0 + * SW1A = 1,2V / reset value = 1,6V + * SW1ADVS = 1,6V / reset value = 1,6V + * SW1ASTBY = 1,2V / reset value = 1,6V + */ + /* + val = 0xc70c; + reg = 0x30000000 | val | 0x80000000; + if (spi_xfer(slave, 32, (uchar *)®, (uchar *)&val, + SPI_XFER_BEGIN | SPI_XFER_END)) + return -1; + */ + + /* + * Set PMIC switcher setting 1 + * SW1A = 1,2V / reset value = 1,6V + * SW1ADVS = 1,6V / reset value = 1,6V + * SW1ASTBY = 1,2V / reset value = 1,6V + */ + /* + val = 0xc70c; + reg = 0x32000000 | val | 0x80000000; + if (spi_xfer(slave, 32, (uchar *)®, (uchar *)&val, + SPI_XFER_BEGIN | SPI_XFER_END)) + return -1; + */ + + /* + * Set PMIC switcher setting 5 + * SW5 = 5V + * SW5 = off + */ + val = 0x021605; + reg = 0x3A000000 | val | 0x80000000; + if (spi_xfer(slave, 32, (uchar *)®, (uchar *)&val, + SPI_XFER_BEGIN | SPI_XFER_END)) + return -1; + + spi_release_bus(slave); + spi_free_slave(slave); + + return 0; +} + int dram_init (void) { gd->bd->bi_dram[0].start = PHYS_SDRAM_1; @@ -112,3 +239,18 @@ int checkboard (void) printf ("Board: TQMA31\n"); return 0; } + +int board_late_init(void) +{ + /* + * Must call this function in late init stage, because the SPI driver, + * required by this function, uses malloc(). The malloc space has not + * been setup in the board_init() stage. + */ + if (adjust_voltages ()) { + printf ("Adjusting voltages failed!\n"); + return -1; + } + return 0; +} + diff --git a/include/configs/TQMA31.h b/include/configs/TQMA31.h index ac81a32..a174940 100644 --- a/include/configs/TQMA31.h +++ b/include/configs/TQMA31.h @@ -299,6 +299,8 @@ * Miscellaneous ******************************************************************************/
+#define BOARD_LATE_INIT + /* Total available space for malloc in bytes */ #define CFG_MALLOC_LEN (CFG_ENV_SIZE + 128 * 1024)