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dt-bindings: clk: Add Baikal-T1 CCU Dividers binding

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After being gained by the CCU PLLs the signals must be transformed to
be suitable for the clock-consumers. This is done by a set of dividers
embedded into the CCU. A first block of dividers is used to create
reference clocks for AXI-bus of high-speed peripheral IP-cores of the
chip. The second block dividers alter the PLLs output signals to be then
consumed by SoC peripheral devices. Both block DT nodes are ordinary
clock-providers with standard set of properties supported. But in addition
to that each clock provider can be used to reset the corresponding clock
domain. This makes the AXI-bus and System Devices CCU DT nodes to be also
reset-providers.

Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Cc: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: linux-mips@vger.kernel.org
Link: https://lore.kernel.org/r/20200526222056.18072-3-Sergey.Semin@baikalelectronics.ru
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Serge Semin
2020-05-27 01:20:54 +03:00
committed by Stephen Boyd
parent aec6adc560
commit 11ea09b9e2
3 changed files with 245 additions and 0 deletions
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32
include/dt-bindings/clock/bt1-ccu.h
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@@ -13,4 +13,36 @@
#define CCU_PCIE_PLL 3
#define CCU_ETH_PLL 4
#define CCU_AXI_MAIN_CLK 0
#define CCU_AXI_DDR_CLK 1
#define CCU_AXI_SATA_CLK 2
#define CCU_AXI_GMAC0_CLK 3
#define CCU_AXI_GMAC1_CLK 4
#define CCU_AXI_XGMAC_CLK 5
#define CCU_AXI_PCIE_M_CLK 6
#define CCU_AXI_PCIE_S_CLK 7
#define CCU_AXI_USB_CLK 8
#define CCU_AXI_HWA_CLK 9
#define CCU_AXI_SRAM_CLK 10
#define CCU_SYS_SATA_REF_CLK 0
#define CCU_SYS_APB_CLK 1
#define CCU_SYS_GMAC0_TX_CLK 2
#define CCU_SYS_GMAC0_PTP_CLK 3
#define CCU_SYS_GMAC1_TX_CLK 4
#define CCU_SYS_GMAC1_PTP_CLK 5
#define CCU_SYS_XGMAC_REF_CLK 6
#define CCU_SYS_XGMAC_PTP_CLK 7
#define CCU_SYS_USB_CLK 8
#define CCU_SYS_PVT_CLK 9
#define CCU_SYS_HWA_CLK 10
#define CCU_SYS_UART_CLK 11
#define CCU_SYS_I2C1_CLK 12
#define CCU_SYS_I2C2_CLK 13
#define CCU_SYS_GPIO_CLK 14
#define CCU_SYS_TIMER0_CLK 15
#define CCU_SYS_TIMER1_CLK 16
#define CCU_SYS_TIMER2_CLK 17
#define CCU_SYS_WDT_CLK 18
#endif /* __DT_BINDINGS_CLOCK_BT1_CCU_H */