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-rw-r--r--board/freescale/ls1088a/ls1088a.c119
1 files changed, 119 insertions, 0 deletions
diff --git a/board/freescale/ls1088a/ls1088a.c b/board/freescale/ls1088a/ls1088a.c
index 1c28ab4..fbdc245 100644
--- a/board/freescale/ls1088a/ls1088a.c
+++ b/board/freescale/ls1088a/ls1088a.c
@@ -18,9 +18,13 @@
#include <environment.h>
#include <asm/arch-fsl-layerscape/soc.h>
#include <asm/arch/ppa.h>
+#include <asm/arch/fsl_serdes.h>
+#include <asm/arch/soc.h>
#include "../common/qixis.h"
#include "ls1088a_qixis.h"
+#include "../common/vid.h"
+#include <fsl_immap.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -302,6 +306,119 @@ void board_retimer_init(void)
/*return the default channel*/
select_i2c_ch_pca9547(I2C_MUX_CH_DEFAULT);
}
+int i2c_multiplexer_select_vid_channel(u8 channel)
+{
+ return select_i2c_ch_pca9547(channel);
+}
+
+#ifdef CONFIG_TARGET_LS1088AQDS
+/* read the current value(SVDD) of the LTM Regulator Voltage */
+int get_serdes_volt(void)
+{
+ int ret, vcode = 0;
+
+ /* Select the PAGE 0 using PMBus commands PAGE for VDD */
+ ret = i2c_write(I2C_SVDD_MONITOR_ADDR,
+ PMBUS_CMD_PAGE, 1, PWM_CHANNEL0, 1);
+ if (ret) {
+ printf("VID: failed to select VDD Page 0\n");
+ return ret;
+ }
+
+ /* Read the output voltage using PMBus command READ_VOUT */
+ ret = i2c_read(I2C_SVDD_MONITOR_ADDR,
+ PMBUS_CMD_READ_VOUT, 1, (void *)&vcode, 2);
+ if (ret) {
+ printf("VID: failed to read the volatge\n");
+ return ret;
+ }
+ return vcode;
+}
+
+int set_serdes_volt(int svdd)
+{
+ int ret, vdd_last;
+ u8 buff[5] = {0x04, PWM_CHANNEL0, PMBUS_CMD_VOUT_COMMAND,
+ svdd & 0xFF, (svdd & 0xFF00) >> 8};
+
+ /* Write the desired voltage code to the SVDD regulator */
+ ret = i2c_write(I2C_SVDD_MONITOR_ADDR,
+ PMBUS_CMD_PAGE_PLUS_WRITE, 1, (void *)&buff, 5);
+ if (ret) {
+ printf("VID: I2C failed to write to the volatge regulator\n");
+ return -1;
+ }
+
+ /* Wait for the volatge to get to the desired value */
+ do {
+ vdd_last = get_serdes_volt();
+ if (vdd_last < 0) {
+ printf("VID: Couldn't read sensor abort VID adjust\n");
+ return -1;
+ }
+ } while (vdd_last != svdd);
+
+ return 1;
+}
+#else
+int get_serdes_volt(void)
+{
+ return 0;
+}
+
+int set_serdes_volt(int svdd)
+{
+ int ret;
+ u8 brdcfg4;
+
+ printf("SVDD changing of RDB\n");
+
+ /* Read the BRDCFG54 via CLPD */
+ ret = i2c_read(CONFIG_SYS_I2C_FPGA_ADDR,
+ QIXIS_BRDCFG4_OFFSET, 1, (void *)&brdcfg4, 1);
+ if (ret) {
+ printf("VID: I2C failed to read the CPLD BRDCFG4\n");
+ return -1;
+ }
+
+ brdcfg4 = brdcfg4 | 0x08;
+
+ /* Write to the BRDCFG4 */
+ ret = i2c_write(CONFIG_SYS_I2C_FPGA_ADDR,
+ QIXIS_BRDCFG4_OFFSET, 1, (void *)&brdcfg4, 1);
+ if (ret) {
+ debug("VID: I2C failed to set the SVDD CPLD BRDCFG4\n");
+ return -1;
+ }
+
+ /* Wait for the volatge to get to the desired value */
+ udelay(10000);
+
+ return 1;
+}
+#endif
+
+/* this function disables the SERDES, changes the SVDD Voltage and enables it*/
+int board_adjust_vdd(int vdd)
+{
+ int ret = 0;
+
+ debug("%s: vdd = %d\n", __func__, vdd);
+
+ /* Special settings to be performed when voltage is 900mV */
+ if (vdd == 900) {
+#ifdef CONFIG_SYS_FSL_DDR
+ ddr_enable_0v9_volt(true);
+#endif
+ ret = setup_serdes_volt(vdd);
+ if (ret < 0) {
+ ret = -1;
+ goto exit;
+ }
+ }
+exit:
+ return ret;
+}
int board_init(void)
{
@@ -321,6 +438,8 @@ int board_init(void)
/* invert AQR105 IRQ pins polarity */
out_le32(irq_ccsr + IRQCR_OFFSET / 4, AQR105_IRQ_MASK);
#endif
+ if (adjust_vdd(0) < 0)
+ printf("core voltage not adjusted\n");
#ifdef CONFIG_FSL_CAAM
sec_init();