TDA4VH-Q1: tda4vh-pcie输出refclk

yk z

Part Number: TDA4VH-Q1
Other Parts Discussed in Thread: TDA4VM

需要tda4vh-sdk8.6中输出refclk 100Mhz

[FAQ] TDA4VM: TDA4VM/DRA829V: routing PCIE reference clock externally - Processors forum - Processors - TI E2E support forums

采用以上patch在vh中无效

1 年多前

0 Shine 1 年多前

TI__Guru**** 357097 points

已咨询e2e工程师，请看下面的回复。

I see that TDA4VH is the SoC in use. Could you try below patch for using internal refclk?

enable_internal_ref_clock_out_pcie1_j784s4.patch

TDA4VH-Q1: tda4vh-pcie refclk - Processors forum - Processors - TI E2E support forums

0 yk z 1 年多前回复 Shine

Prodigy 200 points

--- a/board-support/linux-kernel/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
+++ b/board-support/linux-kernel/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
@@ -729,7 +729,7 @@ &serdes1 {
        status = "okay";
        serdes1_pcie_link: phy@0 {
                reg = <0>;
-               cdns,num-lanes = <2>;
+               cdns,num-lanes = <4>;
                #phy-cells = <0>;
                cdns,phy-type = <PHY_TYPE_PCIE>;
                resets = <&serdes_wiz1 1>, <&serdes_wiz1 2>;
@@ -745,11 +745,14 @@ &pcie0_rc {
        reset-gpios = <&exp1 6 GPIO_ACTIVE_HIGH>;
        phys = <&serdes1_pcie_link>;
        phy-names = "pcie-phy";
+       status = "okay";
+
 };

 &pcie0_ep {
        phys = <&serdes1_pcie_link>;
        phy-names = "pcie-phy";
+       status = "disabled";
 };

 &pcie1_rc {
@@ -783,7 +786,8 @@ &serdes_ln_ctrl {
                      <J784S4_SERDES0_LANE2_IP3_UNUSED>, <J784S4_SERDES0_LANE3_USB>,
                      <J784S4_SERDES1_LANE0_PCIE0_LANE0>, <J784S4_SERDES1_LANE1_PCIE0_LANE1>,
                      <J784S4_SERDES1_LANE2_PCIE0_LANE2>, <J784S4_SERDES1_LANE3_PCIE0_LANE3>,
-                     <J784S4_SERDES2_LANE2_QSGMII_LANE1>, <J784S4_SERDES2_LANE3_QSGMII_LANE2>;
+                     <J784S4_SERDES2_LANE2_QSGMII_LANE1>, <J784S4_SERDES2_LANE3_QSGMII_LANE2>,
+                     <J784S4_SERDES2_LANE2_IP3_UNUSED>,<J784S4_SERDES2_LANE2_IP4_UNUSED>;
 };

 &main_udmass_inta {
 diff --git a/board-support/linux-kernel/drivers/phy/cadence/phy-cadence-torrent.c b/board-support/linux-kernel/drivers/phy/cadence/phy-cadence-torrent.c
index f04619634..34b44c31f 100644
--- a/board-support/linux-kernel/drivers/phy/cadence/phy-cadence-torrent.c
+++ b/board-support/linux-kernel/drivers/phy/cadence/phy-cadence-torrent.c
@@ -2780,6 +2780,27 @@ static int cdns_torrent_phy_probe(struct platform_device *pdev)
                if (ret)
                        goto put_lnk_rst;
        }
+                       /* Un-lock Partition 7 : 8000h to 9FFFh */
+           writel(0x68EF3490, ioremap(0x011D008, 0x4)); /* LOCK7_KICK0 */
+           writel(0xD172BC5A, ioremap(0x011D00C, 0x4)); /* LOCK7_KICK1 */
+                   /* Un-lock Partition 1 : 4000h to 5FFFh */
+            writel(0x68EF3490, ioremap(0x00105008, 0x4)); /* LOCK1_KICK0 */
+            writel(0xD172BC5A, ioremap(0x0010500C, 0x4)); /* LOCK1_KICK1 */
+
+            /* Un-lock Partition 2 : 8000h to 9FFFh */
+            writel(0x68EF3490, ioremap(0x00109008, 0x4)); /* LOCK2_KICK0 */
+            writel(0xD172BC5A, ioremap(0x0010900C, 0x4)); /* LOCK2_KICK1 */
+
+
+            /* Enable ACSPCIe0 PAD 0 and 1 */
+            writel(0x01000000, ioremap(0x00118090, 0x4));
+            /* Enable ACSPCIe1 PAD 0 and 1 */
+            writel(0x01000000, ioremap(0x00118094, 0x4));
+
+            /* PCIE_REFCLK0_CLKSEL : EN + MAIN_PLL2_HSDIV4_CLKOUT */
+            writel(0x00000101, ioremap(0x00108070, 0x4));
+            /* PCIE_REFCLK1_CLKSEL : EN + MAIN_PLL2_HSDIV4_CLKOUT */
+            writel(0x00000101, ioremap(0x00108074, 0x4));

diff --git a/board-support/linux-kernel/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts b/board-support/linux-kernel/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
index 492975144..8a3f17450 100644
--- a/board-support/linux-kernel/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
+++ b/board-support/linux-kernel/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
@@ -729,7 +729,7 @@ &serdes1 {
        status = "okay";
        serdes1_pcie_link: phy@0 {
                reg = <0>;
-               cdns,num-lanes = <2>;
+               cdns,num-lanes = <4>;
                #phy-cells = <0>;
                cdns,phy-type = <PHY_TYPE_PCIE>;
                resets = <&serdes_wiz1 1>, <&serdes_wiz1 2>;
@@ -745,11 +745,14 @@ &pcie0_rc {
        reset-gpios = <&exp1 6 GPIO_ACTIVE_HIGH>;
        phys = <&serdes1_pcie_link>;
        phy-names = "pcie-phy";
+       status = "okay";
+
 };

 &pcie0_ep {
        phys = <&serdes1_pcie_link>;
        phy-names = "pcie-phy";
+       status = "disabled";
 };

 &pcie1_rc {
@@ -783,7 +786,8 @@ &serdes_ln_ctrl {
                      <J784S4_SERDES0_LANE2_IP3_UNUSED>, <J784S4_SERDES0_LANE3_USB>,
                      <J784S4_SERDES1_LANE0_PCIE0_LANE0>, <J784S4_SERDES1_LANE1_PCIE0_LANE1>,
                      <J784S4_SERDES1_LANE2_PCIE0_LANE2>, <J784S4_SERDES1_LANE3_PCIE0_LANE3>,
-                     <J784S4_SERDES2_LANE2_QSGMII_LANE1>, <J784S4_SERDES2_LANE3_QSGMII_LANE2>;
+                     <J784S4_SERDES2_LANE2_QSGMII_LANE1>, <J784S4_SERDES2_LANE3_QSGMII_LANE2>,
+                     <J784S4_SERDES2_LANE2_IP3_UNUSED>,<J784S4_SERDES2_LANE2_IP4_UNUSED>;
 };

 &main_udmass_inta {


diff --git a/board-support/linux-kernel/drivers/phy/cadence/phy-cadence-torrent.c b/board-support/linux-kernel/drivers/phy/cadence/phy-cadence-torrent.c
index f04619634..34b44c31f 100644
--- a/board-support/linux-kernel/drivers/phy/cadence/phy-cadence-torrent.c
+++ b/board-support/linux-kernel/drivers/phy/cadence/phy-cadence-torrent.c
@@ -2780,6 +2780,27 @@ static int cdns_torrent_phy_probe(struct platform_device *pdev)
                if (ret)
                        goto put_lnk_rst;
        }
+                       /* Un-lock Partition 7 : 8000h to 9FFFh */
+           writel(0x68EF3490, ioremap(0x011D008, 0x4)); /* LOCK7_KICK0 */
+           writel(0xD172BC5A, ioremap(0x011D00C, 0x4)); /* LOCK7_KICK1 */
+                   /* Un-lock Partition 1 : 4000h to 5FFFh */
+            writel(0x68EF3490, ioremap(0x00105008, 0x4)); /* LOCK1_KICK0 */
+            writel(0xD172BC5A, ioremap(0x0010500C, 0x4)); /* LOCK1_KICK1 */
+
+            /* Un-lock Partition 2 : 8000h to 9FFFh */
+            writel(0x68EF3490, ioremap(0x00109008, 0x4)); /* LOCK2_KICK0 */
+            writel(0xD172BC5A, ioremap(0x0010900C, 0x4)); /* LOCK2_KICK1 */
+
+
+            /* Enable ACSPCIe0 PAD 0 and 1 */
+            writel(0x01000000, ioremap(0x00118090, 0x4));
+            /* Enable ACSPCIe1 PAD 0 and 1 */
+            writel(0x01000000, ioremap(0x00118094, 0x4));
+
+            /* PCIE_REFCLK0_CLKSEL : EN + MAIN_PLL2_HSDIV4_CLKOUT */
+            writel(0x00000101, ioremap(0x00108070, 0x4));
+            /* PCIE_REFCLK1_CLKSEL : EN + MAIN_PLL2_HSDIV4_CLKOUT */
+            writel(0x00000101, ioremap(0x00108074, 0x4));

        phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
        if (IS_ERR(phy_provider)) {

测量R860 R859一侧，电平幅度由0V变成1.8V,频率不断变动，不在100ｍｈｚ附近

note:用的是贵司的VH开发板

0 Shine 1 年多前回复 yk z

TI__Guru**** 357097 points

已跟进！

0 Shine 1 年多前回复 yk z

TI__Guru**** 357097 points

请看下面e2e工程师的回复。

To clarify, are the R860 R859 installed? And is the behavior being seen that voltage is toggling, but not at 100MHz?

I would need a couple of days to look deeper into this.

0 yk z 1 年多前回复 Shine

Prodigy 200 points

R860 R859在pcb上没有贴电阻，是的，频率不对，波形看起来是波动的噪声

信号幅度变化是因为将bit24置1了，测试了一下，证实是，如果置1是1.8v,置0是0v

	/* PCIE_REFCLK0_CLKSEL : EN + MAIN_PLL2_HSDIV4_CLKOUT */
	writel(0x00000101, ioremap(0x00108070, 0x4));
	/* PCIE_REFCLK1_CLKSEL : EN + MAIN_PLL2_HSDIV4_CLKOUT */
	writel(0x00000101, ioremap(0x00108074, 0x4));

我看你的path中选的是MAIN_PLL2_HSDIV4_CLKOUT，

root@j784s4-evm:~# devmem2 0x682090
/dev/mem opened.
Memory mapped at address 0xffffb5d19000.
Read at address 0x00682090 (0xffffb5d19090): 0x00008011
root@j784s4-evm:~# devmem2 0x682030
/dev/mem opened.
Memory mapped at address 0xffff985cb000.
Read at address 0x00682030 (0xffff985cb030): 0x0000005D
root@j784s4-evm:~# devmem2 0x682034
/dev/mem opened.
Memory mapped at address 0xffffb9ec5000.
Read at address 0x00682034 (0xffffb9ec5034): 0x00C00000
root@j784s4-evm:~#

19.2M*93.75=1800M

1800M/18 = 100M

MAIN_PLL2_HSDIV4_CLKOUT=100M

请问这个信号

PCIE_REFCLK1_P_OUT应该与serdes无关？只是由系统输出？

0 Shine 1 年多前回复 yk z

TI__Guru**** 357097 points

请看下面e2e工程师的回复。
What the patch should do is route the internal clock to the refclk for SERDES configured for PCIe. I will need some time to take a look at it. It looks like some registers are correct since the voltage level is changing, but not all are correct since it looks like noise instead of actual clock.

0 yk z 1 年多前回复 Shine

Prodigy 200 points

Patch for SDK7.3:

/cfs-file/__key/communityserver-discussions-components-files/791/0001_2D00_route_2D00_clock_2D00_externally.patch

Patch for SDK8.x:

/cfs-file/__key/communityserver-discussions-components-files/791/pcie_2D00_ref_2D00_clock_2D00_out_5F00_sdk8.diff

中

regmap_field_write(cdns_phy->phy_pma_cmn_ctrl_rcv_out_en, 0x3);
regmap_field_write(cdns_phy->cmn_plllc_clk1_en, 0x1);
regmap_field_write(cdns_phy->cmn_plllc_clk1outdiv, 0x2e);

按代码中寄存器有offset应该是e09a,但寄存器中没有说，是否是没有公开出来

0 Shine 1 年多前回复 yk z

TI__Guru**** 357097 points

请看下面e2e工程师的回复。

Some of the registers might not be in the TRM, because the registers are taken from some IP documentation directly from Cadence.

Although, the patches you are referencing are for the TDA4VM which has a different SERDES called the sierra, whereas TDA4VH has the torrent SERDES, so SERDES register offsets would be different between the two. To clarify, is the device being used the TDA4VH or the TDA4VM?

0 yk z 1 年多前回复 Shine

Prodigy 200 points

现在case是VH上验证的,所有的验证都是VH，只是将VH中寄存器描述torrent相对比较少，只参考看一下VM的trm的相关描述了解一下

VH中，请问100Mz是从serdes配置出来的嘛，现在需要怎样配置（上面提到pll2 hisdiv 4是100M）

0 Shine 1 年多前回复 yk z

TI__Guru**** 357097 points

已跟进！

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TDA4VH-Q1: tda4vh-pcie输出refclk