summaryrefslogtreecommitdiff
path: root/src/soc/nvidia/tegra
diff options
context:
space:
mode:
Diffstat (limited to 'src/soc/nvidia/tegra')
-rw-r--r--src/soc/nvidia/tegra/displayport.h4
-rw-r--r--src/soc/nvidia/tegra/dp.c586
-rw-r--r--src/soc/nvidia/tegra/usb.c15
3 files changed, 9 insertions, 596 deletions
diff --git a/src/soc/nvidia/tegra/displayport.h b/src/soc/nvidia/tegra/displayport.h
index 8a57170bf9..0a86c41d9c 100644
--- a/src/soc/nvidia/tegra/displayport.h
+++ b/src/soc/nvidia/tegra/displayport.h
@@ -171,10 +171,8 @@ enum {
#define EDP_PWR_OFF_TO_ON_TIME_MS (500+10)
struct tegra_dc_dp_data {
- struct tegra_dc *dc;
- struct tegra_dc_sor_data *sor;
+ struct tegra_dc_sor_data sor;
void *aux_base;
- struct tegra_dc_mode *mode;
struct tegra_dc_dp_link_config link_cfg;
};
diff --git a/src/soc/nvidia/tegra/dp.c b/src/soc/nvidia/tegra/dp.c
deleted file mode 100644
index 28e30c89c4..0000000000
--- a/src/soc/nvidia/tegra/dp.c
+++ /dev/null
@@ -1,586 +0,0 @@
-/*
- * drivers/video/tegra/dc/dp.c
- *
- * Copyright (c) 2011-2013, NVIDIA Corporation.
- *
- * 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.
- *
- */
-
-#include <arch/io.h>
-#include <console/console.h>
-#include <device/device.h>
-#include <device/i2c.h>
-#include <stdlib.h>
-#include <string.h>
-#include <delay.h>
-#include <soc/addressmap.h>
-#include "i2c.h"
-#include "dc.h"
-/* shit. This is broken. */
-#include <soc/nvidia/tegra124/sor.h>
-// this is really broken. #include <soc/ardpaux.h>
-#include <soc/nvidia/tegra/displayport.h>
-
-
-extern int dump;
-unsigned long READL(void* p);
-void WRITEL(unsigned long value, void* p);
-
-static inline u32 tegra_dpaux_readl(struct tegra_dc_dp_data *dp, u32 reg)
-{
- void *addr = dp->aux_base + (u32)(reg <<2);
- u32 reg_val = READL(addr);
- return reg_val;
-}
-
-static inline void tegra_dpaux_writel(struct tegra_dc_dp_data *dp,
- u32 reg, u32 val)
-{
- void *addr = dp->aux_base + (u32)(reg <<2);
- WRITEL(val, addr);
-}
-
-
-static inline u32 tegra_dc_dpaux_poll_register(struct tegra_dc_dp_data *dp,
- u32 reg, u32 mask, u32 exp_val, u32 poll_interval_us, u32 timeout_ms)
-{
-// unsigned long timeout_jf = jiffies + msecs_to_jiffies(timeout_ms);
- u32 reg_val = 0;
-
- printk(BIOS_SPEW, "JZ: %s: enter, poll_reg: %#x: timeout: 0x%x\n",
- __func__, reg*4, timeout_ms);
- do {
-// udelay(poll_interval_us);
- udelay(1);
- reg_val = tegra_dpaux_readl(dp, reg);
- } while (((reg_val & mask) != exp_val) && (--timeout_ms > 0));
-
- if ((reg_val & mask) == exp_val)
- return 0; /* success */
- printk(BIOS_SPEW,"dpaux_poll_register 0x%x: timeout: (reg_val)0x%08x & (mask)0x%08x != (exp_val)0x%08x\n", reg, reg_val, mask, exp_val);
- return timeout_ms;
-}
-
-
-static inline int tegra_dpaux_wait_transaction(struct tegra_dc_dp_data *dp)
-{
- /* According to DP spec, each aux transaction needs to finish
- within 40ms. */
- if (tegra_dc_dpaux_poll_register(dp, DPAUX_DP_AUXCTL,
- DPAUX_DP_AUXCTL_TRANSACTREQ_MASK,
- DPAUX_DP_AUXCTL_TRANSACTREQ_DONE,
- 100, DP_AUX_TIMEOUT_MS*1000) != 0) {
- printk(BIOS_SPEW,"dp: DPAUX transaction timeout\n");
- return -1;
- }
- return 0;
-}
-
-static int tegra_dc_dpaux_write_chunk(struct tegra_dc_dp_data *dp, u32 cmd,
- u32 addr, u8 *data, u32 *size, u32 *aux_stat)
-{
- int i;
- u32 reg_val;
- u32 timeout_retries = DP_AUX_TIMEOUT_MAX_TRIES;
- u32 defer_retries = DP_AUX_DEFER_MAX_TRIES;
- u32 temp_data;
-
- if (*size > DP_AUX_MAX_BYTES)
- return -1; /* only write one chunk of data */
-
- /* Make sure the command is write command */
- switch (cmd) {
- case DPAUX_DP_AUXCTL_CMD_I2CWR:
- case DPAUX_DP_AUXCTL_CMD_MOTWR:
- case DPAUX_DP_AUXCTL_CMD_AUXWR:
- break;
- default:
- printk(BIOS_SPEW,"dp: aux write cmd 0x%x is invalid\n",
- cmd);
- return -1;
- }
-
-#if 0
-/* interesting. */
- if (tegra_platform_is_silicon()) {
- *aux_stat = tegra_dpaux_readl(dp, DPAUX_DP_AUXSTAT);
- if (!(*aux_stat & DPAUX_DP_AUXSTAT_HPD_STATUS_PLUGGED)) {
- printk(BIOS_SPEW,"dp: HPD is not detected\n");
- return -EFAULT;
- }
- }
-#endif
-
- tegra_dpaux_writel(dp, DPAUX_DP_AUXADDR, addr);
- for (i = 0; i < DP_AUX_MAX_BYTES/4; ++i) {
- memcpy(&temp_data, data, 4);
- tegra_dpaux_writel(dp, DPAUX_DP_AUXDATA_WRITE_W(i),
- temp_data);
- data += 4;
- }
-
- reg_val = tegra_dpaux_readl(dp, DPAUX_DP_AUXCTL);
- reg_val &= ~DPAUX_DP_AUXCTL_CMD_MASK;
- reg_val |= cmd;
- reg_val &= ~DPAUX_DP_AUXCTL_CMDLEN_FIELD;
- reg_val |= ((*size-1) << DPAUX_DP_AUXCTL_CMDLEN_SHIFT);
-
- while ((timeout_retries > 0) && (defer_retries > 0)) {
- if ((timeout_retries != DP_AUX_TIMEOUT_MAX_TRIES) ||
- (defer_retries != DP_AUX_DEFER_MAX_TRIES))
- udelay(1);
-
- reg_val |= DPAUX_DP_AUXCTL_TRANSACTREQ_PENDING;
- tegra_dpaux_writel(dp, DPAUX_DP_AUXCTL, reg_val);
-
- if (tegra_dpaux_wait_transaction(dp))
- printk(BIOS_SPEW,"dp: aux write transaction timeout\n");
-
- *aux_stat = tegra_dpaux_readl(dp, DPAUX_DP_AUXSTAT);
-
- if ((*aux_stat & DPAUX_DP_AUXSTAT_TIMEOUT_ERROR_PENDING) ||
- (*aux_stat & DPAUX_DP_AUXSTAT_RX_ERROR_PENDING) ||
- (*aux_stat & DPAUX_DP_AUXSTAT_SINKSTAT_ERROR_PENDING) ||
- (*aux_stat & DPAUX_DP_AUXSTAT_NO_STOP_ERROR_PENDING)) {
- if (timeout_retries-- > 0) {
- printk(BIOS_SPEW,"dp: aux write retry (0x%x) -- %d\n",
- *aux_stat, timeout_retries);
- /* clear the error bits */
- tegra_dpaux_writel(dp, DPAUX_DP_AUXSTAT,
- *aux_stat);
- continue;
- } else {
- printk(BIOS_SPEW,"dp: aux write got error (0x%x)\n",
- *aux_stat);
- return -1;
- }
- }
-
- if ((*aux_stat & DPAUX_DP_AUXSTAT_REPLYTYPE_I2CDEFER) ||
- (*aux_stat & DPAUX_DP_AUXSTAT_REPLYTYPE_DEFER)) {
- if (defer_retries-- > 0) {
- printk(BIOS_SPEW, "dp: aux write defer (0x%x) -- %d\n",
- *aux_stat, defer_retries);
- /* clear the error bits */
- tegra_dpaux_writel(dp, DPAUX_DP_AUXSTAT,
- *aux_stat);
- continue;
- } else {
- printk(BIOS_SPEW, "dp: aux write defer exceeds max retries "
- "(0x%x)\n",
- *aux_stat);
- return -1;
- }
- }
-
- if ((*aux_stat & DPAUX_DP_AUXSTAT_REPLYTYPE_MASK) ==
- DPAUX_DP_AUXSTAT_REPLYTYPE_ACK) {
- *size = ((*aux_stat) & DPAUX_DP_AUXSTAT_REPLY_M_MASK);
- return 0;
- } else {
- printk(BIOS_SPEW,"dp: aux write failed (0x%x)\n", *aux_stat);
- return -1;
- }
- }
- /* Should never come to here */
- return -1;
-}
-
-static int tegra_dc_dpaux_write(struct tegra_dc_dp_data *dp, u32 cmd, u32 addr,
- u8 *data, u32 *size, u32 *aux_stat)
-{
- u32 cur_size = 0;
- u32 finished = 0;
- u32 cur_left;
- int ret = 0;
-
- do {
- cur_size = *size - finished;
- if (cur_size > DP_AUX_MAX_BYTES)
- cur_size = DP_AUX_MAX_BYTES;
- cur_left = cur_size;
- ret = tegra_dc_dpaux_write_chunk(dp, cmd, addr,
- data, &cur_left, aux_stat);
-
- cur_size -= cur_left;
- finished += cur_size;
- addr += cur_size;
- data += cur_size;
-
- if (ret)
- break;
- } while (*size > finished);
-
- *size = finished;
- return ret;
-}
-
-static int tegra_dc_dpaux_read_chunk(struct tegra_dc_dp_data *dp, u32 cmd,
- u32 addr, u8 *data, u32 *size, u32 *aux_stat)
-{
- u32 reg_val;
- u32 timeout_retries = DP_AUX_TIMEOUT_MAX_TRIES;
- u32 defer_retries = DP_AUX_DEFER_MAX_TRIES;
-
- if (*size > DP_AUX_MAX_BYTES)
- return -1; /* only read one chunk */
-
- /* Check to make sure the command is read command */
- switch (cmd) {
- case DPAUX_DP_AUXCTL_CMD_I2CRD:
- case DPAUX_DP_AUXCTL_CMD_I2CREQWSTAT:
- case DPAUX_DP_AUXCTL_CMD_MOTRD:
- case DPAUX_DP_AUXCTL_CMD_AUXRD:
- break;
- default:
- printk(BIOS_SPEW,"dp: aux read cmd 0x%x is invalid\n", cmd);
- return -1;
- }
-
- if (0){
- *aux_stat = tegra_dpaux_readl(dp, DPAUX_DP_AUXSTAT);
- if (!(*aux_stat & DPAUX_DP_AUXSTAT_HPD_STATUS_PLUGGED)) {
- printk(BIOS_SPEW,"dp: HPD is not detected\n");
- //return EFAULT;
- }
- }
-
- tegra_dpaux_writel(dp, DPAUX_DP_AUXADDR, addr);
-
- reg_val = tegra_dpaux_readl(dp, DPAUX_DP_AUXCTL);
- reg_val &= ~DPAUX_DP_AUXCTL_CMD_MASK;
- reg_val |= cmd;
- printk(BIOS_SPEW, "cmd = %08x\n", reg_val);
- reg_val &= ~DPAUX_DP_AUXCTL_CMDLEN_FIELD;
- reg_val |= ((*size-1) << DPAUX_DP_AUXCTL_CMDLEN_SHIFT);
- printk(BIOS_SPEW, "cmd = %08x\n", reg_val);
- while ((timeout_retries > 0) && (defer_retries > 0)) {
- if ((timeout_retries != DP_AUX_TIMEOUT_MAX_TRIES) ||
- (defer_retries != DP_AUX_DEFER_MAX_TRIES))
- udelay(DP_DPCP_RETRY_SLEEP_NS * 2);
-
- reg_val |= DPAUX_DP_AUXCTL_TRANSACTREQ_PENDING;
- printk(BIOS_SPEW, "cmd = %08x\n", reg_val);
- tegra_dpaux_writel(dp, DPAUX_DP_AUXCTL, reg_val);
-
- if (tegra_dpaux_wait_transaction(dp))
- printk(BIOS_SPEW,"dp: aux read transaction timeout\n");
-
- *aux_stat = tegra_dpaux_readl(dp, DPAUX_DP_AUXSTAT);
- printk(BIOS_SPEW, "dp: %s: aux stat: 0x%08x\n", __func__, *aux_stat);
-
- if ((*aux_stat & DPAUX_DP_AUXSTAT_TIMEOUT_ERROR_PENDING) ||
- (*aux_stat & DPAUX_DP_AUXSTAT_RX_ERROR_PENDING) ||
- (*aux_stat & DPAUX_DP_AUXSTAT_SINKSTAT_ERROR_PENDING) ||
- (*aux_stat & DPAUX_DP_AUXSTAT_NO_STOP_ERROR_PENDING)) {
- if (timeout_retries-- > 0) {
- printk(BIOS_SPEW, "dp: aux read retry (0x%x) -- %d\n",
- *aux_stat, timeout_retries);
- /* clear the error bits */
- tegra_dpaux_writel(dp, DPAUX_DP_AUXSTAT,
- *aux_stat);
- continue; /* retry */
- } else {
- printk(BIOS_SPEW,"dp: aux read got error (0x%x)\n",
- *aux_stat);
- return -1;
- }
- }
-
- if ((*aux_stat & DPAUX_DP_AUXSTAT_REPLYTYPE_I2CDEFER) ||
- (*aux_stat & DPAUX_DP_AUXSTAT_REPLYTYPE_DEFER)) {
- if (defer_retries-- > 0) {
- printk(BIOS_SPEW, "dp: aux read defer (0x%x) -- %d\n",
- *aux_stat, defer_retries);
- /* clear the error bits */
- tegra_dpaux_writel(dp, DPAUX_DP_AUXSTAT,
- *aux_stat);
- continue;
- } else {
- printk(BIOS_SPEW,"dp: aux read defer exceeds max retries "
- "(0x%x)\n", *aux_stat);
- return -1;
- }
- }
-
- if ((*aux_stat & DPAUX_DP_AUXSTAT_REPLYTYPE_MASK) ==
- DPAUX_DP_AUXSTAT_REPLYTYPE_ACK) {
- int i;
- u32 temp_data[4];
-
- for (i = 0; i < DP_AUX_MAX_BYTES/4; ++i)
- temp_data[i] = tegra_dpaux_readl(dp,
- DPAUX_DP_AUXDATA_READ_W(i));
-
- *size = ((*aux_stat) & DPAUX_DP_AUXSTAT_REPLY_M_MASK);
- printk(BIOS_SPEW, "dp: aux read data %d bytes\n", *size);
- memcpy(data, temp_data, *size);
-
- return 0;
- } else {
- printk(BIOS_SPEW,"dp: aux read failed (0x%x\n", *aux_stat);
- return -1;
- }
- }
- /* Should never come to here */
- printk(BIOS_SPEW, "%s: can't\n", __func__);
- return -1;
-}
-
-int tegra_dc_dpaux_read(struct tegra_dc_dp_data *dp, u32 cmd, u32 addr,
- u8 *data, u32 *size, u32 *aux_stat)
-{
- u32 finished = 0;
- u32 cur_size;
- int ret = 0;
-
- do {
- cur_size = *size - finished;
- if (cur_size > DP_AUX_MAX_BYTES)
- cur_size = DP_AUX_MAX_BYTES;
-
- ret = tegra_dc_dpaux_read_chunk(dp, cmd, addr,
- data, &cur_size, aux_stat);
-
- /* cur_size should be the real size returned */
- addr += cur_size;
- data += cur_size;
- finished += cur_size;
-
- if (ret)
- break;
-
-#if 0
- if (cur_size == 0) {
- printk(BIOS_SPEW,"JZ: no data found, ret\n");
- break;
- }
-#endif
- } while (*size > finished);
-
- *size = finished;
- return ret;
-}
-
-static int tegra_dc_dp_dpcd_read(struct tegra_dc_dp_data *dp, u32 cmd,
- u8 *data_ptr)
-{
- u32 size = 1;
- u32 status = 0;
- int ret;
-
- ret = tegra_dc_dpaux_read_chunk(dp, DPAUX_DP_AUXCTL_CMD_AUXRD,
- cmd, data_ptr, &size, &status);
- if (ret)
- printk(BIOS_SPEW,"dp: Failed to read DPCD data. CMD 0x%x, Status 0x%x\n",
- cmd, status);
-
- return ret;
-}
-
-static int tegra_dc_dp_init_max_link_cfg(struct tegra_dc_dp_data *dp,
- struct tegra_dc_dp_link_config *cfg)
-{
- u8 dpcd_data;
- int ret;
-
- ret = tegra_dc_dp_dpcd_read(dp, NV_DPCD_MAX_LANE_COUNT,
- &dpcd_data);
- if (ret)
- return ret;
-
- cfg->max_lane_count = dpcd_data & NV_DPCD_MAX_LANE_COUNT_MASK;
- printk(BIOS_SPEW, "JZ: %s: max_lane_count: %d\n", __func__, cfg->max_lane_count);
-
- cfg->support_enhanced_framing =
- (dpcd_data & NV_DPCD_MAX_LANE_COUNT_ENHANCED_FRAMING_YES) ?
- 1 : 0;
- printk(BIOS_SPEW, "JZ: %s: enh-framing: %d\n", __func__, cfg->support_enhanced_framing);
-
- ret = tegra_dc_dp_dpcd_read(dp, NV_DPCD_MAX_DOWNSPREAD,
- &dpcd_data);
- if (ret)
- return ret;
- cfg->downspread = (dpcd_data & NV_DPCD_MAX_DOWNSPREAD_VAL_0_5_PCT) ?
- 1 : 0;
- printk(BIOS_SPEW, "JZ: %s: downspread: %d\n", __func__, cfg->downspread);
-
- ret = tegra_dc_dp_dpcd_read(dp, NV_DPCD_MAX_LINK_BANDWIDTH,
- &cfg->max_link_bw);
- if (ret)
- return ret;
- printk(BIOS_SPEW, "JZ: %s: max_link_bw: %d\n", __func__, cfg->max_link_bw);
-
- // jz, changed
- // cfg->bits_per_pixel = dp->dc->pdata->default_out->depth;
- cfg->bits_per_pixel = 24;
-
- /* TODO: need to come from the board file */
- /* Venice2 settings */
- cfg->drive_current = 0x20202020;
- cfg->preemphasis = 0;
- cfg->postcursor = 0;
-
- ret = tegra_dc_dp_dpcd_read(dp, NV_DPCD_EDP_CONFIG_CAP,
- &dpcd_data);
- if (ret)
- return ret;
- cfg->alt_scramber_reset_cap =
- (dpcd_data & NV_DPCD_EDP_CONFIG_CAP_ASC_RESET_YES) ?
- 1 : 0;
- cfg->only_enhanced_framing =
- (dpcd_data & NV_DPCD_EDP_CONFIG_CAP_FRAMING_CHANGE_YES) ?
- 1 : 0;
- printk(BIOS_SPEW, "JZ: %s: alt_reset_cap: %d, only_enh_framing: %d\n", __func__,
- cfg->alt_scramber_reset_cap, cfg->only_enhanced_framing);
-
- cfg->lane_count = cfg->max_lane_count;
- cfg->link_bw = cfg->max_link_bw;
- cfg->enhanced_framing = cfg->support_enhanced_framing;
- return 0;
-}
-
-
-//struct tegra_dc dc_data = {0};
-struct tegra_dc_sor_data sor_data = {0};
-struct tegra_dc_dp_data dp_data = {0};
-
-static int tegra_dc_dpcd_read_rev(struct tegra_dc_dp_data *dp,
- u8 *rev)
-{
- u32 size;
- int ret;
- u32 status = 0;
-
- size = 3;
- ret = tegra_dc_dpaux_read(dp, DPAUX_DP_AUXCTL_CMD_AUXRD,
- NV_DPCD_REV, rev, &size, &status);
- if (ret) {
- printk(BIOS_SPEW,"dp: Failed to read NV_DPCD_REV\n");
- return ret;
- }
- return 0;
-}
-u32 dp_setup_timing(u32 panel_id, u32 width, u32 height);
-void dp_bringup(u32 winb_addr)
-{
- struct tegra_dc_dp_data *dp = &dp_data;
-
- u32 dpcd_rev;
- u32 pclk_freq;
-// int ret;
-
- printk(BIOS_SPEW, "JZ: %s: entry\n",__func__);
-
- dp->sor = &sor_data;
-// dp->sor->dc = dc;
- dp->sor->base = (void *)TEGRA_ARM_SOR;
-// dp->sor->base_res = base_res;
-// dp->sor->sor_clk = clk;
- dp->sor->link_cfg = &dp->link_cfg;
- dp->sor->portnum = 0;
-
- dp->aux_base = (void *)TEGRA_ARM_DPAUX;
-/* dp->mode = 0; */ /* ???? */
-
- /* read panel info */
- if (!tegra_dc_dpcd_read_rev(dp, (u8 *)&dpcd_rev)) {
- printk(BIOS_SPEW,"PANEL info: \n");
- printk(BIOS_SPEW,"--DPCP version(%#x): %d.%d\n",
- dpcd_rev, (dpcd_rev >> 4)&0x0f, (dpcd_rev & 0x0f));
- }
-
- if (tegra_dc_dp_init_max_link_cfg(dp, &dp->link_cfg))
- printk(BIOS_SPEW,"dp: failed to init link configuration\n");
-
- dp_link_training((u32)(dp->link_cfg.lane_count),
- (u32)(dp->link_cfg.link_bw));
-
- pclk_freq = dp_setup_timing(5, 2560, 1700); // W: 2560, H: 1700, use_plld2: 1
- printk(BIOS_SPEW, "JZ: %s: pclk_freq: %d\n",__func__, pclk_freq);
-
-// void dp_misc_setting(u32 panel_bpp, u32 width, u32 height, u32 winb_addr)
-void dp_misc_setting(u32 panel_bpp, u32 width, u32 height, u32 winb_addr,
- u32 lane_count, u32 enhanced_framing, u32 panel_edp,
- u32 pclkfreq, u32 linkfreq);
-
- dp_misc_setting(dp->link_cfg.bits_per_pixel,
- 2560, 1700, winb_addr,
- (u32)dp->link_cfg.lane_count,
- (u32)dp->link_cfg.enhanced_framing,
- (u32)dp->link_cfg.alt_scramber_reset_cap,
- pclk_freq,
- dp->link_cfg.link_bw * 27);
-
-
-}
-
-void debug_dpaux_print(u32 addr, u32 size)
-{
- struct tegra_dc_dp_data *dp = &dp_data;
- u32 status = 0;
- u8 buf[16];
- int i;
-
- if ((size == 0) || (size > 16)) {
- printk(BIOS_SPEW,"dp: %s: invalid size %d\n", __func__, size);
- return;
- }
-
- if (tegra_dc_dpaux_read(dp, DPAUX_DP_AUXCTL_CMD_AUXRD,
- addr, buf, &size, &status)) {
- printk(BIOS_SPEW,"******AuxRead Error: 0x%04x: status 0x%08x\n", addr, status);
- return;
- }
- printk(BIOS_SPEW, "%s: addr: 0x%04x, size: %d\n", __func__, addr, size);
- for (i=0; i < size; ++i)
- printk(BIOS_SPEW," %02x", buf[i]);
-
- printk(BIOS_SPEW,"\n");
-}
-
-int dpaux_read(u32 addr, u32 size, u8 *data)
-{
-
- struct tegra_dc_dp_data *dp = &dp_data;
- u32 status = 0;
-
- if ((size == 0) || (size > 16)) {
- printk(BIOS_SPEW,"dp: %s: invalid size %d\n", __func__, size);
- return -1;
- }
-
- if (tegra_dc_dpaux_read(dp, DPAUX_DP_AUXCTL_CMD_AUXRD,
- addr, data, &size, &status)) {
- printk(BIOS_SPEW,"dp: Failed to read reg %#x, status: %#x\n", addr, status);
- return -1;
- }
-
- return 0;
-}
-
-int dpaux_write(u32 addr, u32 size, u32 data)
-{
- struct tegra_dc_dp_data *dp = &dp_data;
- u32 status = 0;
- int ret;
-
- printk(BIOS_SPEW, "JZ: %s: entry, addr: 0x%08x, size: 0x%08x, data: %#x\n",
- __func__, addr, size, data);
-
- ret = tegra_dc_dpaux_write(dp, DPAUX_DP_AUXCTL_CMD_AUXWR,
- addr, (u8 *)&data, &size, &status);
- if (ret)
- printk(BIOS_SPEW,"dp: Failed to write to reg %#x, status: 0x%x\n",
- addr, status);
- return ret;
-}
-
diff --git a/src/soc/nvidia/tegra/usb.c b/src/soc/nvidia/tegra/usb.c
index 0a3434fb0d..39477e17d3 100644
--- a/src/soc/nvidia/tegra/usb.c
+++ b/src/soc/nvidia/tegra/usb.c
@@ -93,13 +93,13 @@ void usb_setup_utmip(struct usb_ctlr *usb)
}
/*
- * Tegra EHCI controllers need their usb_mode and lpm_ctrl registers initialized
- * after every EHCI reset and before any other actions (such as Run/Stop bit)
- * are taken. We reset the controller here, set those registers and rely on the
- * fact that libpayload doesn't reset EHCI controllers on initialization for
- * whatever weird reason. This is ugly, fragile, and I really don't like it, but
- * making this work will require an ugly hack one way or another so we might as
- * well take the path of least resistance for now.
+ * Tegra EHCI controllers need their usb_mode, lpm_ctrl and tx_fill_tuning
+ * registers initialized after every EHCI reset and before any other actions
+ * (such as Run/Stop bit) are taken. We reset the controller here, set those
+ * registers and rely on the fact that libpayload doesn't reset EHCI controllers
+ * on initialization for whatever weird reason. This is ugly, fragile, and I
+ * really don't like it, but making this work will require an ugly hack one way
+ * or another so we might as well take the path of least resistance for now.
*/
void usb_ehci_reset_and_prepare(struct usb_ctlr *usb, enum usb_phy_type type)
{
@@ -117,4 +117,5 @@ void usb_ehci_reset_and_prepare(struct usb_ctlr *usb, enum usb_phy_type type)
write32(3 << 0, &usb->usb_mode); /* Controller mode: HOST */
write32(type << 29, &usb->lpm_ctrl); /* Parallel transceiver selct */
+ write32(0x10 << 16, &usb->tx_fill_tuning); /* Tx FIFO Burst thresh */
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-13 07:40:40 +0000