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14e4b14979
Clock Driver This driver is ast2500-specific and is not compatible with earlier versions of this chip. The differences are not that big, but they are in somewhat random places, so making it compatible with ast2400 is not worth the effort at the moment. SDRAM MC driver The driver is very ast2500-specific and is completely incompatible with previous versions of the chip. The memory controller is very poorly documented by Aspeed in the datasheet, with any mention of the whole range of registers missing. The initialization procedure has been basically taken from Aspeed SDK, where it is implemented in assembly. Here it is rewritten in C, with very limited understanding of what exactly it is doing. Reviewed-by: Simon Glass <sjg@chromium.org>
30 lines
511 B
C
30 lines
511 B
C
/*
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* Copyright 2016 Google Inc.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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/* Core Clocks */
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#define PLL_HPLL 1
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#define PLL_DPLL 2
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#define PLL_D2PLL 3
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#define PLL_MPLL 4
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#define ARMCLK 5
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/* Bus Clocks, derived from core clocks */
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#define BCLK_PCLK 101
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#define BCLK_LHCLK 102
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#define BCLK_MACCLK 103
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#define BCLK_SDCLK 104
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#define BCLK_ARMCLK 105
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#define MCLK_DDR 201
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/* Special clocks */
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#define PCLK_UART1 501
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#define PCLK_UART2 502
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#define PCLK_UART3 503
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#define PCLK_UART4 504
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#define PCLK_UART5 505
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