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clk: samsung: exynos7885: Add USB related clocks to CMU_FSYS
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Exynos7885 SoC has a DWC3 USB Controller with Exynos USB PHY which in
theory supports USB3 SuperSpeed, but is only used as USB2 in all known
devices.

These clocks are needed for everything related to USB.

While at it, also remove the CLK_SET_RATE_PARENT capability of
CLK_MOUT_FSYS_USB30DRD_USER, since it's not actually needed.

Signed-off-by: David Virag <virag.david003@gmail.com>
Link: https://lore.kernel.org/r/20240816175034.769628-3-virag.david003@gmail.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
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David Virag authored and Krzysztof Kozlowski committed Aug 21, 2024
1 parent 4e39e5b commit 011a9de
Showing 1 changed file with 57 additions and 14 deletions.
71 changes: 57 additions & 14 deletions drivers/clk/samsung/clk-exynos7885.c
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Original file line number Diff line number Diff line change
Expand Up @@ -20,7 +20,7 @@
#define CLKS_NR_TOP (CLK_MOUT_SHARED1_PLL + 1)
#define CLKS_NR_CORE (CLK_GOUT_TREX_P_CORE_PCLK_P_CORE + 1)
#define CLKS_NR_PERI (CLK_GOUT_WDT1_PCLK + 1)
#define CLKS_NR_FSYS (CLK_MOUT_FSYS_USB30DRD_USER + 1)
#define CLKS_NR_FSYS (CLK_FSYS_USB30DRD_REF_CLK + 1)

/* ---- CMU_TOP ------------------------------------------------------------- */

Expand Down Expand Up @@ -686,30 +686,56 @@ static const struct samsung_cmu_info core_cmu_info __initconst = {
/* ---- CMU_FSYS ------------------------------------------------------------ */

/* Register Offset definitions for CMU_FSYS (0x13400000) */
#define PLL_CON0_MUX_CLKCMU_FSYS_BUS_USER 0x0100
#define PLL_CON0_MUX_CLKCMU_FSYS_MMC_CARD_USER 0x0120
#define PLL_CON0_MUX_CLKCMU_FSYS_MMC_EMBD_USER 0x0140
#define PLL_CON0_MUX_CLKCMU_FSYS_MMC_SDIO_USER 0x0160
#define PLL_CON0_MUX_CLKCMU_FSYS_USB30DRD_USER 0x0180
#define CLK_CON_GAT_GOUT_FSYS_MMC_CARD_I_ACLK 0x2030
#define CLK_CON_GAT_GOUT_FSYS_MMC_CARD_SDCLKIN 0x2034
#define CLK_CON_GAT_GOUT_FSYS_MMC_EMBD_I_ACLK 0x2038
#define CLK_CON_GAT_GOUT_FSYS_MMC_EMBD_SDCLKIN 0x203c
#define CLK_CON_GAT_GOUT_FSYS_MMC_SDIO_I_ACLK 0x2040
#define CLK_CON_GAT_GOUT_FSYS_MMC_SDIO_SDCLKIN 0x2044
#define PLL_LOCKTIME_PLL_USB 0x0000
#define PLL_CON0_MUX_CLKCMU_FSYS_BUS_USER 0x0100
#define PLL_CON0_MUX_CLKCMU_FSYS_MMC_CARD_USER 0x0120
#define PLL_CON0_MUX_CLKCMU_FSYS_MMC_EMBD_USER 0x0140
#define PLL_CON0_MUX_CLKCMU_FSYS_MMC_SDIO_USER 0x0160
#define PLL_CON0_MUX_CLKCMU_FSYS_USB30DRD_USER 0x0180
#define PLL_CON0_PLL_USB 0x01a0
#define CLK_CON_GAT_CLK_FSYS_USB20PHY_CLKCORE 0x200c
#define CLK_CON_GAT_GOUT_FSYS_MMC_CARD_I_ACLK 0x2030
#define CLK_CON_GAT_GOUT_FSYS_MMC_CARD_SDCLKIN 0x2034
#define CLK_CON_GAT_GOUT_FSYS_MMC_EMBD_I_ACLK 0x2038
#define CLK_CON_GAT_GOUT_FSYS_MMC_EMBD_SDCLKIN 0x203c
#define CLK_CON_GAT_GOUT_FSYS_MMC_SDIO_I_ACLK 0x2040
#define CLK_CON_GAT_GOUT_FSYS_MMC_SDIO_SDCLKIN 0x2044
#define CLK_CON_GAT_GOUT_FSYS_USB30DRD_ACLK_20PHYCTRL 0x2068
#define CLK_CON_GAT_GOUT_FSYS_USB30DRD_ACLK_30PHYCTRL_0 0x206c
#define CLK_CON_GAT_GOUT_FSYS_USB30DRD_ACLK_30PHYCTRL_1 0x2070
#define CLK_CON_GAT_GOUT_FSYS_USB30DRD_BUS_CLK_EARLY 0x2074
#define CLK_CON_GAT_GOUT_FSYS_USB30DRD_REF_CLK 0x2078

static const unsigned long fsys_clk_regs[] __initconst = {
PLL_LOCKTIME_PLL_USB,
PLL_CON0_MUX_CLKCMU_FSYS_BUS_USER,
PLL_CON0_MUX_CLKCMU_FSYS_MMC_CARD_USER,
PLL_CON0_MUX_CLKCMU_FSYS_MMC_EMBD_USER,
PLL_CON0_MUX_CLKCMU_FSYS_MMC_SDIO_USER,
PLL_CON0_MUX_CLKCMU_FSYS_USB30DRD_USER,
PLL_CON0_PLL_USB,
CLK_CON_GAT_CLK_FSYS_USB20PHY_CLKCORE,
CLK_CON_GAT_GOUT_FSYS_MMC_CARD_I_ACLK,
CLK_CON_GAT_GOUT_FSYS_MMC_CARD_SDCLKIN,
CLK_CON_GAT_GOUT_FSYS_MMC_EMBD_I_ACLK,
CLK_CON_GAT_GOUT_FSYS_MMC_EMBD_SDCLKIN,
CLK_CON_GAT_GOUT_FSYS_MMC_SDIO_I_ACLK,
CLK_CON_GAT_GOUT_FSYS_MMC_SDIO_SDCLKIN,
CLK_CON_GAT_GOUT_FSYS_USB30DRD_ACLK_20PHYCTRL,
CLK_CON_GAT_GOUT_FSYS_USB30DRD_ACLK_30PHYCTRL_0,
CLK_CON_GAT_GOUT_FSYS_USB30DRD_ACLK_30PHYCTRL_1,
CLK_CON_GAT_GOUT_FSYS_USB30DRD_BUS_CLK_EARLY,
CLK_CON_GAT_GOUT_FSYS_USB30DRD_REF_CLK,
};

static const struct samsung_pll_rate_table pll_usb_rate_table[] __initconst = {
PLL_35XX_RATE(26 * MHZ, 50000000U, 400, 13, 4),
};

static const struct samsung_pll_clock fsys_pll_clks[] __initconst = {
PLL(pll_1418x, CLK_FOUT_USB_PLL, "fout_usb_pll", "oscclk",
PLL_LOCKTIME_PLL_USB, PLL_CON0_PLL_USB,
pll_usb_rate_table),
};

/* List of parent clocks for Muxes in CMU_FSYS */
Expand All @@ -718,6 +744,7 @@ PNAME(mout_fsys_mmc_card_user_p) = { "oscclk", "dout_fsys_mmc_card" };
PNAME(mout_fsys_mmc_embd_user_p) = { "oscclk", "dout_fsys_mmc_embd" };
PNAME(mout_fsys_mmc_sdio_user_p) = { "oscclk", "dout_fsys_mmc_sdio" };
PNAME(mout_fsys_usb30drd_user_p) = { "oscclk", "dout_fsys_usb30drd" };
PNAME(mout_usb_pll_p) = { "oscclk", "fout_usb_pll" };

static const struct samsung_mux_clock fsys_mux_clks[] __initconst = {
MUX(CLK_MOUT_FSYS_BUS_USER, "mout_fsys_bus_user", mout_fsys_bus_user_p,
Expand All @@ -731,12 +758,16 @@ static const struct samsung_mux_clock fsys_mux_clks[] __initconst = {
MUX_F(CLK_MOUT_FSYS_MMC_SDIO_USER, "mout_fsys_mmc_sdio_user",
mout_fsys_mmc_sdio_user_p, PLL_CON0_MUX_CLKCMU_FSYS_MMC_SDIO_USER,
4, 1, CLK_SET_RATE_PARENT, 0),
MUX_F(CLK_MOUT_FSYS_USB30DRD_USER, "mout_fsys_usb30drd_user",
MUX(CLK_MOUT_FSYS_USB30DRD_USER, "mout_fsys_usb30drd_user",
mout_fsys_usb30drd_user_p, PLL_CON0_MUX_CLKCMU_FSYS_USB30DRD_USER,
4, 1, CLK_SET_RATE_PARENT, 0),
4, 1),
nMUX_F(CLK_MOUT_USB_PLL, "mout_usb_pll", mout_usb_pll_p,
PLL_CON0_PLL_USB, 4, 1, CLK_SET_RATE_PARENT, 0),
};

static const struct samsung_gate_clock fsys_gate_clks[] __initconst = {
GATE(CLK_FSYS_USB20PHY_CLKCORE, "clk_fsys_usb20phy_clkcore", "mout_usb_pll",
CLK_CON_GAT_CLK_FSYS_USB20PHY_CLKCORE, 21, CLK_SET_RATE_PARENT, 0),
GATE(CLK_GOUT_MMC_CARD_ACLK, "gout_mmc_card_aclk", "mout_fsys_bus_user",
CLK_CON_GAT_GOUT_FSYS_MMC_CARD_I_ACLK, 21, 0, 0),
GATE(CLK_GOUT_MMC_CARD_SDCLKIN, "gout_mmc_card_sdclkin",
Expand All @@ -752,9 +783,21 @@ static const struct samsung_gate_clock fsys_gate_clks[] __initconst = {
GATE(CLK_GOUT_MMC_SDIO_SDCLKIN, "gout_mmc_sdio_sdclkin",
"mout_fsys_mmc_sdio_user", CLK_CON_GAT_GOUT_FSYS_MMC_SDIO_SDCLKIN,
21, CLK_SET_RATE_PARENT, 0),
GATE(CLK_FSYS_USB30DRD_ACLK_20PHYCTRL, "clk_fsys_usb30drd_aclk_20phyctrl",
"mout_fsys_bus_user", CLK_CON_GAT_GOUT_FSYS_USB30DRD_ACLK_20PHYCTRL, 21, 0, 0),
GATE(CLK_FSYS_USB30DRD_ACLK_30PHYCTRL_0, "clk_fsys_usb30drd_aclk_30phyctrl_0",
"mout_fsys_bus_user", CLK_CON_GAT_GOUT_FSYS_USB30DRD_ACLK_30PHYCTRL_0, 21, 0, 0),
GATE(CLK_FSYS_USB30DRD_ACLK_30PHYCTRL_1, "clk_fsys_usb30drd_aclk_30phyctrl_1",
"mout_fsys_bus_user", CLK_CON_GAT_GOUT_FSYS_USB30DRD_ACLK_30PHYCTRL_1, 21, 0, 0),
GATE(CLK_FSYS_USB30DRD_BUS_CLK_EARLY, "clk_fsys_usb30drd_bus_clk_early",
"mout_fsys_bus_user", CLK_CON_GAT_GOUT_FSYS_USB30DRD_BUS_CLK_EARLY, 21, 0, 0),
GATE(CLK_FSYS_USB30DRD_REF_CLK, "clk_fsys_usb30drd_ref_clk", "mout_fsys_usb30drd_user",
CLK_CON_GAT_GOUT_FSYS_USB30DRD_REF_CLK, 21, 0, 0),
};

static const struct samsung_cmu_info fsys_cmu_info __initconst = {
.pll_clks = fsys_pll_clks,
.nr_pll_clks = ARRAY_SIZE(fsys_pll_clks),
.mux_clks = fsys_mux_clks,
.nr_mux_clks = ARRAY_SIZE(fsys_mux_clks),
.gate_clks = fsys_gate_clks,
Expand Down

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