clk: qcom: x1e80100: add support for PCIe clocks

Add the PCIe clocks for the x1e80100 GCC.

Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20241125-topic-pcie-clk-v1-4-4315d1e4e164@linaro.org
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

diff --git a/drivers/clk/qcom/clock-x1e80100.c b/drivers/clk/qcom/clock-x1e80100.c
index 6bcd705..bd9c6ed 100644 (file)
--- a/drivers/clk/qcom/clock-x1e80100.c
+++ b/drivers/clk/qcom/clock-x1e80100.c
@@ -54,6 +54,16 @@ static const struct freq_tbl ftbl_gcc_usb30_prim_master_clk_src[] = {
        { }
 };
 
+static const struct freq_tbl ftbl_gcc_pcie_0_aux_clk_src[] = {
+       F(19200000, CFG_CLK_SRC_CXO, 1, 0, 0),
+       { }
+};
+
+static const struct freq_tbl ftbl_gcc_pcie_0_phy_rchng_clk_src[] = {
+       F(100000000, CFG_CLK_SRC_GPLL0_EVEN, 3, 0, 0),
+       { }
+};
+
 static ulong x1e80100_set_rate(struct clk *clk, ulong rate)
 {
        struct msm_clk_priv *priv = dev_get_priv(clk->dev);
@@ -78,6 +88,24 @@ static ulong x1e80100_set_rate(struct clk *clk, ulong rate)
        case GCC_USB30_PRIM_MOCK_UTMI_CLK:
                clk_rcg_set_rate(priv->base, 0x39044, 0, 0);
                return TCXO_DIV2_RATE;
+       case GCC_PCIE_4_AUX_CLK:
+               freq = qcom_find_freq(ftbl_gcc_pcie_0_aux_clk_src, rate);
+               clk_rcg_set_rate_mnd(priv->base, 0x6b080,
+                                    freq->pre_div, freq->m, freq->n, freq->src, 16);
+               return freq->freq;
+       case GCC_PCIE_4_PHY_RCHNG_CLK:
+               freq = qcom_find_freq(ftbl_gcc_pcie_0_phy_rchng_clk_src, rate);
+               clk_rcg_set_rate(priv->base, 0x6b064, freq->pre_div, freq->src);
+               return freq->freq;
+       case GCC_PCIE_6A_AUX_CLK:
+               freq = qcom_find_freq(ftbl_gcc_pcie_0_aux_clk_src, rate);
+               clk_rcg_set_rate_mnd(priv->base, 0x3108c,
+                                    freq->pre_div, freq->m, freq->n, freq->src, 16);
+               return freq->freq;
+       case GCC_PCIE_6A_PHY_RCHNG_CLK:
+               freq = qcom_find_freq(ftbl_gcc_pcie_0_phy_rchng_clk_src, rate);
+               clk_rcg_set_rate(priv->base, 0x31070, freq->pre_div, freq->src);
+               return freq->freq;
        default:
                return 0;
        }
@@ -86,6 +114,24 @@ static ulong x1e80100_set_rate(struct clk *clk, ulong rate)
 static const struct gate_clk x1e80100_clks[] = {
        GATE_CLK(GCC_AGGRE_UFS_PHY_AXI_CLK,             0x770e4, BIT(0)),
        GATE_CLK(GCC_CFG_NOC_USB3_PRIM_AXI_CLK,         0x3908c, BIT(0)),
+       GATE_CLK(GCC_CFG_NOC_PCIE_ANOC_SOUTH_AHB_CLK,   0x52000, BIT(20)),
+       GATE_CLK(GCC_CFG_NOC_PCIE_ANOC_NORTH_AHB_CLK,   0x52028, BIT(22)),
+       GATE_CLK(GCC_CNOC_PCIE_SOUTH_SF_AXI_CLK,        0x52028, BIT(12)),
+       GATE_CLK(GCC_CNOC_PCIE_NORTH_SF_AXI_CLK,        0x52008, BIT(6)),
+       GATE_CLK(GCC_PCIE_4_AUX_CLK,                    0x52008, BIT(3)),
+       GATE_CLK(GCC_PCIE_4_CFG_AHB_CLK,                0x52008, BIT(2)),
+       GATE_CLK(GCC_PCIE_4_MSTR_AXI_CLK,               0x52008, BIT(1)),
+       GATE_CLK(GCC_PCIE_4_PHY_RCHNG_CLK,              0x52000, BIT(22)),
+       GATE_CLK(GCC_PCIE_4_PIPE_CLK,                   0x52008, BIT(4)),
+       GATE_CLK(GCC_PCIE_4_SLV_AXI_CLK,                0x52008, BIT(0)),
+       GATE_CLK(GCC_PCIE_4_SLV_Q2A_AXI_CLK,            0x52008, BIT(5)),
+       GATE_CLK(GCC_PCIE_6A_AUX_CLK,                   0x52018, BIT(24)),
+       GATE_CLK(GCC_PCIE_6A_CFG_AHB_CLK,               0x52018, BIT(23)),
+       GATE_CLK(GCC_PCIE_6A_MSTR_AXI_CLK,              0x52018, BIT(22)),
+       GATE_CLK(GCC_PCIE_6A_PHY_RCHNG_CLK,             0x52018, BIT(27)),
+       GATE_CLK(GCC_PCIE_6A_PIPE_CLK,                  0x52018, BIT(26)),
+       GATE_CLK(GCC_PCIE_6A_SLV_AXI_CLK,               0x52018, BIT(21)),
+       GATE_CLK(GCC_PCIE_6A_SLV_Q2A_AXI_CLK,           0x52018, BIT(20)),
        GATE_CLK(GCC_QUPV3_WRAP2_CORE_2X_CLK,           0x52010, BIT(3)),
        GATE_CLK(GCC_QUPV3_WRAP2_CORE_CLK,              0x52010, BIT(0)),
        GATE_CLK(GCC_QUPV3_WRAP2_S0_CLK,                0x52010, BIT(4)),
@@ -118,6 +164,14 @@ static int x1e80100_enable(struct clk *clk)
                qcom_gate_clk_en(priv, GCC_USB3_PRIM_PHY_AUX_CLK);
                qcom_gate_clk_en(priv, GCC_USB3_PRIM_PHY_COM_AUX_CLK);
                break;
+       case GCC_PCIE_4_PIPE_CLK:
+               // GCC_PCIE_4_PIPE_CLK_SRC
+               clk_phy_mux_enable(priv->base, 0x6b07c, true);
+               break;
+       case GCC_PCIE_6A_PIPE_CLK:
+               // GCC_PCIE_6A_PIPE_CLK_SRC
+               clk_phy_mux_enable(priv->base, 0x31088, true);
+               break;
        }
 
        qcom_gate_clk_en(priv, clk->id);