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u-boot/arch/arm/mach-uniphier/ph1-pro4/clkrst_init.c

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ARM: UniPhier: add UniPhier SoC support code These are used by Panasonic UniPhier SoC family. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-10-03 10:21:06 +00:00
/*
ARM: UniPhier: split clkrst_init() into two functions Split the current clkrst_init() into two functions: - early_clkrst_init(): called from SPL Deassert the reset signals of the memory controller and some other basic cores. - clkrst_init(): called from main U-boot Deassert the reset signals that are necessary for the access to peripherals etc. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2015-02-26 17:26:51 +00:00
* Copyright (C) 2011-2015 Panasonic Corporation
ARM: UniPhier: add UniPhier SoC support code These are used by Panasonic UniPhier SoC family. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-10-03 10:21:06 +00:00
* Author: Masahiro Yamada <yamada.m@jp.panasonic.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <asm/io.h>
ARM: UniPhier: include <mach/*.h> instead of <asm/arch/*.h> Since commit 0e7368c6c426 (kbuild: prepare for moving headers into mach-*/include/mach), we can replace #include <asm/arch/*.h> with <mach/*.h> so we do not need to create the symbolic link during the build. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2015-02-26 17:26:44 +00:00
#include <mach/sc-regs.h>
ARM: UniPhier: add UniPhier SoC support code These are used by Panasonic UniPhier SoC family. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-10-03 10:21:06 +00:00
void clkrst_init(void)
{
u32 tmp;
/* deassert reset */
tmp = readl(SC_RSTCTRL);
ARM: UniPhier: enable xHCI and GIO cores for PH1-Pro4 This is necessary to use the USB 3.0 host controllers on PH1-Pro4. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2015-02-26 17:26:58 +00:00
#ifdef CONFIG_USB_XHCI_UNIPHIER
tmp |= SC_RSTCTRL_NRST_USB3B0 | SC_RSTCTRL_NRST_USB3C0 |
SC_RSTCTRL_NRST_GIO;
#endif
ARM: UniPhier: split clkrst_init() into two functions Split the current clkrst_init() into two functions: - early_clkrst_init(): called from SPL Deassert the reset signals of the memory controller and some other basic cores. - clkrst_init(): called from main U-boot Deassert the reset signals that are necessary for the access to peripherals etc. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2015-02-26 17:26:51 +00:00
#ifdef CONFIG_UNIPHIER_ETH
tmp |= SC_RSTCTRL_NRST_ETHER;
#endif
ARM: UniPhier: enable STDMAC for EHCI Deassert the reset signal and provide the clock for STDMAC core. This is necessary for the USB 2.0 host controllers. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2015-02-26 17:26:53 +00:00
#ifdef CONFIG_USB_EHCI_UNIPHIER
tmp |= SC_RSTCTRL_NRST_STDMAC;
#endif
ARM: UniPhier: split clkrst_init() into two functions Split the current clkrst_init() into two functions: - early_clkrst_init(): called from SPL Deassert the reset signals of the memory controller and some other basic cores. - clkrst_init(): called from main U-boot Deassert the reset signals that are necessary for the access to peripherals etc. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2015-02-26 17:26:51 +00:00
#ifdef CONFIG_NAND_DENALI
tmp |= SC_RSTCTRL_NRST_NAND;
#endif
ARM: UniPhier: add UniPhier SoC support code These are used by Panasonic UniPhier SoC family. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-10-03 10:21:06 +00:00
writel(tmp, SC_RSTCTRL);
readl(SC_RSTCTRL); /* dummy read */
ARM: UniPhier: enable xHCI and GIO cores for PH1-Pro4 This is necessary to use the USB 3.0 host controllers on PH1-Pro4. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2015-02-26 17:26:58 +00:00
#ifdef CONFIG_USB_XHCI_UNIPHIER
tmp = readl(SC_RSTCTRL2);
tmp |= SC_RSTCTRL2_NRST_USB3B1 | SC_RSTCTRL2_NRST_USB3C1;
writel(tmp, SC_RSTCTRL2);
readl(SC_RSTCTRL2); /* dummy read */
#endif
ARM: UniPhier: add UniPhier SoC support code These are used by Panasonic UniPhier SoC family. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-10-03 10:21:06 +00:00
/* privide clocks */
tmp = readl(SC_CLKCTRL);
ARM: UniPhier: enable xHCI and GIO cores for PH1-Pro4 This is necessary to use the USB 3.0 host controllers on PH1-Pro4. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2015-02-26 17:26:58 +00:00
#ifdef CONFIG_USB_XHCI_UNIPHIER
tmp |= SC_CLKCTRL_CEN_USB31 | SC_CLKCTRL_CEN_USB30 |
SC_CLKCTRL_CEN_GIO;
#endif
ARM: UniPhier: split clkrst_init() into two functions Split the current clkrst_init() into two functions: - early_clkrst_init(): called from SPL Deassert the reset signals of the memory controller and some other basic cores. - clkrst_init(): called from main U-boot Deassert the reset signals that are necessary for the access to peripherals etc. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2015-02-26 17:26:51 +00:00
#ifdef CONFIG_UNIPHIER_ETH
tmp |= SC_CLKCTRL_CEN_ETHER;
#endif
#ifdef CONFIG_USB_EHCI_UNIPHIER
ARM: UniPhier: enable STDMAC for EHCI Deassert the reset signal and provide the clock for STDMAC core. This is necessary for the USB 2.0 host controllers. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2015-02-26 17:26:53 +00:00
tmp |= SC_CLKCTRL_CEN_MIO | SC_CLKCTRL_CEN_STDMAC;
ARM: UniPhier: split clkrst_init() into two functions Split the current clkrst_init() into two functions: - early_clkrst_init(): called from SPL Deassert the reset signals of the memory controller and some other basic cores. - clkrst_init(): called from main U-boot Deassert the reset signals that are necessary for the access to peripherals etc. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2015-02-26 17:26:51 +00:00
#endif
#ifdef CONFIG_NAND_DENALI
tmp |= SC_CLKCTRL_CEN_NAND;
#endif
ARM: UniPhier: add UniPhier SoC support code These are used by Panasonic UniPhier SoC family. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-10-03 10:21:06 +00:00
writel(tmp, SC_CLKCTRL);
readl(SC_CLKCTRL); /* dummy read */
}
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