Add initial set of clocks and resets for enabling U-Boot on QCS9100 based Ride platforms.
Reviewed-by: Neil Armstrong neil.armstrong@linaro.org Signed-off-by: Varadarajan Narayanan quic_varada@quicinc.com --- v2: Add 'Reviewed-by: Neil Armstrong' --- 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, +};