[PATCH v1 2/5] clk/qcom: add initial clock driver for qcs9100
Varadarajan Narayanan
quic_varada at quicinc.com
Fri Jan 3 06:14:01 CET 2025
Add initial set of clocks and resets for enabling U-Boot on QCS9100
based Ride platforms.
Signed-off-by: Varadarajan Narayanan <quic_varada at quicinc.com>
---
drivers/clk/qcom/Kconfig | 8 ++
drivers/clk/qcom/Makefile | 1 +
drivers/clk/qcom/clock-sa8775p.c | 142 +++++++++++++++++++++++++++++++
3 files changed, 151 insertions(+)
create mode 100644 drivers/clk/qcom/clock-sa8775p.c
diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig
index d76fca5dba..ad5797ab85 100644
--- a/drivers/clk/qcom/Kconfig
+++ b/drivers/clk/qcom/Kconfig
@@ -103,6 +103,14 @@ config CLK_QCOM_SC7280
on the Snapdragon SC7280 SoC. This driver supports the clocks
and resets exposed by the GCC hardware block.
+config CLK_QCOM_SA8775P
+ bool "Qualcomm SA8775 GCC"
+ select CLK_QCOM
+ help
+ Say Y here to enable support for the Global Clock Controller
+ on the Snapdragon SA8775 SoC. This driver supports the clocks
+ and resets exposed by the GCC hardware block.
+
endmenu
endif
diff --git a/drivers/clk/qcom/Makefile b/drivers/clk/qcom/Makefile
index ab33f1c5fa..01b541af32 100644
--- a/drivers/clk/qcom/Makefile
+++ b/drivers/clk/qcom/Makefile
@@ -15,3 +15,4 @@ obj-$(CONFIG_CLK_QCOM_SM8150) += clock-sm8150.o
obj-$(CONFIG_CLK_QCOM_SM8250) += clock-sm8250.o
obj-$(CONFIG_CLK_QCOM_SM8550) += clock-sm8550.o
obj-$(CONFIG_CLK_QCOM_SM8650) += clock-sm8650.o
+obj-$(CONFIG_CLK_QCOM_SA8775P) += clock-sa8775p.o
diff --git a/drivers/clk/qcom/clock-sa8775p.c b/drivers/clk/qcom/clock-sa8775p.c
new file mode 100644
index 0000000000..e31f24ed4f
--- /dev/null
+++ b/drivers/clk/qcom/clock-sa8775p.c
@@ -0,0 +1,142 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Clock drivers for Qualcomm sa8775p
+ *
+ * (C) Copyright 2024 Linaro Ltd.
+ */
+
+#include <linux/types.h>
+#include <clk-uclass.h>
+#include <dm.h>
+#include <linux/delay.h>
+#include <asm/io.h>
+#include <linux/bug.h>
+#include <linux/bitops.h>
+#include <dt-bindings/clock/qcom,sa8775p-gcc.h>
+#include "clock-qcom.h"
+
+#define USB30_PRIM_MOCK_UTMI_CLK_CMD_RCGR 0xf038
+#define USB30_PRIM_MASTER_CLK_CMD_RCGR 0xf020
+
+static ulong sa8775p_set_rate(struct clk *clk, ulong rate)
+{
+ struct msm_clk_priv *priv = dev_get_priv(clk->dev);
+
+ if (clk->id < priv->data->num_clks)
+ debug("%s: %s, requested rate=%ld\n", __func__,
+ priv->data->clks[clk->id].name, rate);
+
+ switch (clk->id) {
+ case GCC_USB30_PRIM_MOCK_UTMI_CLK:
+ WARN(rate != 19200000, "Unexpected rate for USB30_PRIM_MOCK_UTMI_CLK: %lu\n", rate);
+ clk_rcg_set_rate(priv->base, USB30_PRIM_MOCK_UTMI_CLK_CMD_RCGR, 0, CFG_CLK_SRC_CXO);
+ return rate;
+ case GCC_USB30_PRIM_MASTER_CLK:
+ WARN(rate != 200000000, "Unexpected rate for USB30_PRIM_MASTER_CLK: %lu\n", rate);
+ clk_rcg_set_rate_mnd(priv->base, USB30_PRIM_MASTER_CLK_CMD_RCGR,
+ 1, 0, 0, CFG_CLK_SRC_GPLL0_ODD, 8);
+ clk_rcg_set_rate(priv->base, 0xf064, 0, 0);
+ return rate;
+ default:
+ return 0;
+ }
+}
+
+static const struct gate_clk sa8775p_clks[] = {
+ GATE_CLK(GCC_CFG_NOC_USB3_PRIM_AXI_CLK, 0x1b088, 1),
+ GATE_CLK(GCC_USB30_PRIM_MASTER_CLK, 0x1b018, 1),
+ GATE_CLK(GCC_AGGRE_USB3_PRIM_AXI_CLK, 0x1b084, 1),
+ GATE_CLK(GCC_USB30_PRIM_SLEEP_CLK, 0x1b020, 1),
+ GATE_CLK(GCC_USB30_PRIM_MOCK_UTMI_CLK, 0x1b024, 1),
+ GATE_CLK(GCC_USB3_PRIM_PHY_AUX_CLK, 0x1b05c, 1),
+ GATE_CLK(GCC_USB3_PRIM_PHY_COM_AUX_CLK, 0x1b060, 1),
+};
+
+static int sa8775p_enable(struct clk *clk)
+{
+ struct msm_clk_priv *priv = dev_get_priv(clk->dev);
+
+ if (priv->data->num_clks < clk->id) {
+ debug("%s: unknown clk id %lu\n", __func__, clk->id);
+ return 0;
+ }
+
+ debug("%s: clk %ld: %s\n", __func__, clk->id, sa8775p_clks[clk->id].name);
+
+ switch (clk->id) {
+ case GCC_AGGRE_USB3_PRIM_AXI_CLK:
+ qcom_gate_clk_en(priv, GCC_USB30_PRIM_MASTER_CLK);
+ fallthrough;
+ case GCC_USB30_PRIM_MASTER_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;
+ }
+
+ qcom_gate_clk_en(priv, clk->id);
+
+ return 0;
+}
+
+static const struct qcom_reset_map sa8775p_gcc_resets[] = {
+ [GCC_CAMERA_BCR] = { 0x32000 },
+ [GCC_DISPLAY1_BCR] = { 0xC7000 },
+ [GCC_DISPLAY_BCR] = { 0x33000 },
+ [GCC_EMAC0_BCR] = { 0xB6000 },
+ [GCC_EMAC1_BCR] = { 0xB4000 },
+ [GCC_GPU_BCR] = { 0x7D000 },
+ [GCC_MMSS_BCR] = { 0x17000 },
+ [GCC_PCIE_0_BCR] = { 0xa9000 },
+ [GCC_PCIE_0_LINK_DOWN_BCR] = { 0xBF000 },
+ [GCC_PCIE_0_NOCSR_COM_PHY_BCR] = { 0xBF008 },
+ [GCC_PCIE_0_PHY_BCR] = { 0xAD144 },
+ [GCC_PCIE_0_PHY_NOCSR_COM_PHY_BCR] = { 0xBF00C },
+ [GCC_PCIE_1_BCR] = { 0x77000 },
+ [GCC_PCIE_1_LINK_DOWN_BCR] = { 0xAE084 },
+ [GCC_PCIE_1_NOCSR_COM_PHY_BCR] = { 0xAE090 },
+ [GCC_PCIE_1_PHY_BCR] = { 0xAE08C },
+ [GCC_PCIE_1_PHY_NOCSR_COM_PHY_BCR] = { 0xAE094 },
+ [GCC_PDM_BCR] = { 0x3F000 },
+ [GCC_QUPV3_WRAPPER_0_BCR] = { 0x23000 },
+ [GCC_QUPV3_WRAPPER_1_BCR] = { 0x24000 },
+ [GCC_QUPV3_WRAPPER_2_BCR] = { 0x2A000 },
+ [GCC_QUPV3_WRAPPER_3_BCR] = { 0xC4000 },
+ [GCC_SDCC1_BCR] = { 0x20000 },
+ [GCC_TSCSS_BCR] = { 0x21000 },
+ [GCC_UFS_CARD_BCR] = { 0x81000 },
+ [GCC_UFS_PHY_BCR] = { 0x83000 },
+};
+
+static const struct qcom_power_map sa8775p_gdscs[] = {
+ [UFS_PHY_GDSC] = { 0x83004 },
+ [USB30_PRIM_GDSC] = { 0x1B004 },
+};
+
+static struct msm_clk_data sa8775_gcc_data = {
+ .resets = sa8775p_gcc_resets,
+ .num_resets = ARRAY_SIZE(sa8775p_gcc_resets),
+ .clks = sa8775p_clks,
+ .num_clks = ARRAY_SIZE(sa8775p_clks),
+
+ .power_domains = sa8775p_gdscs,
+ .num_power_domains = ARRAY_SIZE(sa8775p_gdscs),
+
+ .enable = sa8775p_enable,
+ .set_rate = sa8775p_set_rate,
+};
+
+static const struct udevice_id gcc_sa8775p_of_match[] = {
+ {
+ .compatible = "qcom,sa8775p-gcc",
+ .data = (ulong)&sa8775_gcc_data,
+ },
+ { }
+};
+
+U_BOOT_DRIVER(gcc_sa8775p) = {
+ .name = "gcc_sa8775p",
+ .id = UCLASS_NOP,
+ .of_match = gcc_sa8775p_of_match,
+ .bind = qcom_cc_bind,
+ .flags = DM_FLAG_PRE_RELOC | DM_FLAG_DEFAULT_PD_CTRL_OFF,
+};
--
2.34.1
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