summaryrefslogtreecommitdiff
path: root/include/dt-bindings/clock/jz4740-cgu.h
blob: 43153d3e9bd267904a6f93e11a27769338fae1be (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
/*
 * This header provides clock numbers for the ingenic,jz4740-cgu DT binding.
 *
 * They are roughly ordered as:
 *   - external clocks
 *   - PLLs
 *   - muxes/dividers in the order they appear in the jz4740 programmers manual
 *   - gates in order of their bit in the CLKGR* registers
 */

#ifndef __DT_BINDINGS_CLOCK_JZ4740_CGU_H__
#define __DT_BINDINGS_CLOCK_JZ4740_CGU_H__

#define JZ4740_CLK_EXT		0
#define JZ4740_CLK_RTC		1
#define JZ4740_CLK_PLL		2
#define JZ4740_CLK_PLL_HALF	3
#define JZ4740_CLK_CCLK		4
#define JZ4740_CLK_HCLK		5
#define JZ4740_CLK_PCLK		6
#define JZ4740_CLK_MCLK		7
#define JZ4740_CLK_LCD		8
#define JZ4740_CLK_LCD_PCLK	9
#define JZ4740_CLK_I2S		10
#define JZ4740_CLK_SPI		11
#define JZ4740_CLK_MMC		12
#define JZ4740_CLK_UHC		13
#define JZ4740_CLK_UDC		14
#define JZ4740_CLK_UART0	15
#define JZ4740_CLK_UART1	16
#define JZ4740_CLK_DMA		17
#define JZ4740_CLK_IPU		18
#define JZ4740_CLK_ADC		19
#define JZ4740_CLK_I2C		20
#define JZ4740_CLK_AIC		21

#endif /* __DT_BINDINGS_CLOCK_JZ4740_CGU_H__ */
AArch64 UEFI implementations disable the MMU in ExitBootServices(), after which unaligned accesses to RAM are no longer supported. Commit: abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel") fixed an issue in the memory map handling of the stub FDT code, but inadvertently created an issue with such firmware, by moving some of the FDT manipulation to after the invocation of ExitBootServices(). Given that the stub's libfdt implementation uses the ordinary, accelerated string functions, which rely on hardware handling of unaligned accesses, manipulating the FDT with the MMU off may result in alignment faults. So fix the situation by moving the update_fdt_memmap() call into the callback function invoked by efi_exit_boot_services() right before it calls the ExitBootServices() UEFI service (which is arguably a better place for it anyway) Note that disabling the MMU in ExitBootServices() is not compliant with the UEFI spec, and carries great risk due to the fact that switching from cached to uncached memory accesses halfway through compiler generated code (i.e., involving a stack) can never be done in a way that is architecturally safe. Fixes: abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel") Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Tested-by: Riku Voipio <riku.voipio@linaro.org> Cc: <stable@vger.kernel.org> Cc: mark.rutland@arm.com Cc: linux-efi@vger.kernel.org Cc: matt@codeblueprint.co.uk Cc: leif.lindholm@linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1485971102-23330-2-git-send-email-ard.biesheuvel@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/drm/drm_pciids.h')