From: Kuogee Hsieh <khsieh@codeaurora.org>
To: robdclark@gmail.com, sean@poorly.run, swboyd@chromium.org,
vkoul@kernel.org, agross@kernel.org, bjorn.andersson@linaro.org
Cc: tanmay@codeaurora.org, abhinavk@codeaurora.org,
aravindh@codeaurora.org, khsieh@codeaurora.org,
linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v3] phy: qcom-qmp: add hbr3_hbr2 voltage and premphasis swing table
Date: Tue, 16 Mar 2021 10:12:41 -0700 [thread overview]
Message-ID: <1615914761-12300-1-git-send-email-khsieh@codeaurora.org> (raw)
Add hbr3_hbr2 voltage and premphasis swing table to support
HBR3 link rate.
Changes in V2:
-- replaced upper case with lower case at hbr3_hbr2 table
Changes in v3:
-- replace space with tab at hbr3_hbr2 table
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
---
drivers/phy/qualcomm/phy-qcom-qmp.c | 23 +++++++++++++++++++++--
1 file changed, 21 insertions(+), 2 deletions(-)
diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c
index 0939a9e..6aaa59c 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp.c
@@ -2965,6 +2965,20 @@ static void qcom_qmp_phy_dp_aux_init(struct qmp_phy *qphy)
qphy->pcs + QSERDES_V3_DP_PHY_AUX_INTERRUPT_MASK);
}
+static const u8 qmp_dp_v3_pre_emphasis_hbr3_hbr2[4][4] = {
+ { 0x00, 0x0c, 0x15, 0x1a },
+ { 0x02, 0x0e, 0x16, 0xff },
+ { 0x02, 0x11, 0xff, 0xff },
+ { 0x04, 0xff, 0xff, 0xff }
+};
+
+static const u8 qmp_dp_v3_voltage_swing_hbr3_hbr2[4][4] = {
+ { 0x02, 0x12, 0x16, 0x1a },
+ { 0x09, 0x19, 0x1f, 0xff },
+ { 0x10, 0x1f, 0xff, 0xff },
+ { 0x1f, 0xff, 0xff, 0xff }
+};
+
static const u8 qmp_dp_v3_pre_emphasis_hbr_rbr[4][4] = {
{ 0x00, 0x0c, 0x14, 0x19 },
{ 0x00, 0x0b, 0x12, 0xff },
@@ -3000,8 +3014,13 @@ static void qcom_qmp_phy_configure_dp_tx(struct qmp_phy *qphy)
drvr_en = 0x10;
}
- voltage_swing_cfg = qmp_dp_v3_voltage_swing_hbr_rbr[v_level][p_level];
- pre_emphasis_cfg = qmp_dp_v3_pre_emphasis_hbr_rbr[v_level][p_level];
+ if (dp_opts->link_rate <= 2700) {
+ voltage_swing_cfg = qmp_dp_v3_voltage_swing_hbr_rbr[v_level][p_level];
+ pre_emphasis_cfg = qmp_dp_v3_pre_emphasis_hbr_rbr[v_level][p_level];
+ } else {
+ voltage_swing_cfg = qmp_dp_v3_voltage_swing_hbr3_hbr2[v_level][p_level];
+ pre_emphasis_cfg = qmp_dp_v3_pre_emphasis_hbr3_hbr2[v_level][p_level];
+ }
/* TODO: Move check to config check */
if (voltage_swing_cfg == 0xFF && pre_emphasis_cfg == 0xFF)
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
next reply other threads:[~2021-03-16 17:13 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-16 17:12 Kuogee Hsieh [this message]
2021-03-17 0:54 ` [PATCH v3] phy: qcom-qmp: add hbr3_hbr2 voltage and premphasis swing table Stephen Boyd
2021-03-17 6:37 ` Vinod Koul
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1615914761-12300-1-git-send-email-khsieh@codeaurora.org \
--to=khsieh@codeaurora.org \
--cc=abhinavk@codeaurora.org \
--cc=agross@kernel.org \
--cc=aravindh@codeaurora.org \
--cc=bjorn.andersson@linaro.org \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=robdclark@gmail.com \
--cc=sean@poorly.run \
--cc=swboyd@chromium.org \
--cc=tanmay@codeaurora.org \
--cc=vkoul@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).