ARM: mmp: add support for MMP3 SoC

Similar to MMP2, which this patch is based on. Known differencies from MMP2
are:

* Two PJ4B cores instead of one PJ4
* Tauros 3 L2 cache controller instead of Tauros 2
* A GIC interrupt controller optionally used instead of the MMP one
* A TWD local timer
* Different USB2 PHY
* A USB3 SS controller
* More interrupt muxes

Hard to tell what else is different, because documentation is not
available.

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>

diff --git a/arch/arm/mach-mmp/Kconfig b/arch/arm/mach-mmp/Kconfig
index 0440109..b58a03b 100644 (file)
--- a/arch/arm/mach-mmp/Kconfig
+++ b/arch/arm/mach-mmp/Kconfig
@@ -1,13 +1,13 @@
 # SPDX-License-Identifier: GPL-2.0-only
 menuconfig ARCH_MMP
-       bool "Marvell PXA168/910/MMP2"
+       bool "Marvell PXA168/910/MMP2/MMP3"
        depends on ARCH_MULTI_V5 || ARCH_MULTI_V7
        select GPIO_PXA
        select GPIOLIB
        select PINCTRL
        select PLAT_PXA
        help
-         Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
+         Support for Marvell's PXA168/PXA910(MMP), MMP2, and MMP3 processor lines.
 
 if ARCH_MMP
 
@@ -129,6 +129,24 @@ config MACH_MMP2_DT
          Include support for Marvell MMP2 based platforms using
          the device tree.
 
+config MACH_MMP3_DT
+       bool "Support MMP3 (ARMv7) platforms"
+       depends on ARCH_MULTI_V7
+       select ARM_GIC
+       select HAVE_ARM_SCU if SMP
+       select HAVE_ARM_TWD if SMP
+       select CACHE_L2X0
+       select PINCTRL
+       select PINCTRL_SINGLE
+       select ARCH_HAS_RESET_CONTROLLER
+       select CPU_PJ4B
+       select PM_GENERIC_DOMAINS if PM
+       select PM_GENERIC_DOMAINS_OF if PM && OF
+       help
+         Say 'Y' here if you want to include support for platforms
+         with Marvell MMP3 processor, also known as PXA2128 or
+         Armada 620.
+
 endmenu
 
 config CPU_PXA168

diff --git a/arch/arm/mach-mmp/Makefile b/arch/arm/mach-mmp/Makefile
index 8f267c7..322c1c9 100644 (file)
--- a/arch/arm/mach-mmp/Makefile
+++ b/arch/arm/mach-mmp/Makefile
@@ -34,5 +34,6 @@ obj-$(CONFIG_MACH_FLINT)      += flint.o
 obj-$(CONFIG_MACH_MARVELL_JASPER) += jasper.o
 obj-$(CONFIG_MACH_MMP_DT)      += mmp-dt.o
 obj-$(CONFIG_MACH_MMP2_DT)     += mmp2-dt.o
+obj-$(CONFIG_MACH_MMP3_DT)     += mmp3.o
 obj-$(CONFIG_MACH_TETON_BGA)   += teton_bga.o
 obj-$(CONFIG_MACH_GPLUGD)      += gplugd.o

diff --git a/arch/arm/mach-mmp/cputype.h b/arch/arm/mach-mmp/cputype.h
index a96abcf..c3ec889 100644 (file)
--- a/arch/arm/mach-mmp/cputype.h
+++ b/arch/arm/mach-mmp/cputype.h
@@ -18,6 +18,8 @@
  * MMP2             Z0    0x560f5811   0x00F00410
  * MMP2      Z1    0x560f5811   0x00E00410
  * MMP2      A0    0x560f5811   0x00A0A610
+ * MMP3      A0    0x562f5842   0x00A02128
+ * MMP3      B0    0x562f5842   0x00B02128
  */
 
 extern unsigned int mmp_chip_id;
@@ -55,4 +57,29 @@ static inline int cpu_is_mmp2(void)
 #define cpu_is_mmp2()  (0)
 #endif
 
+#ifdef CONFIG_MACH_MMP3_DT
+static inline int cpu_is_mmp3(void)
+{
+       return (((read_cpuid_id() >> 8) & 0xff) == 0x58) &&
+               ((mmp_chip_id & 0xffff) == 0x2128);
+}
+
+static inline int cpu_is_mmp3_a0(void)
+{
+       return (cpu_is_mmp3() &&
+               ((mmp_chip_id & 0x00ff0000) == 0x00a00000));
+}
+
+static inline int cpu_is_mmp3_b0(void)
+{
+       return (cpu_is_mmp3() &&
+               ((mmp_chip_id & 0x00ff0000) == 0x00b00000));
+}
+
+#else
+#define cpu_is_mmp3()          (0)
+#define cpu_is_mmp3_a0()       (0)
+#define cpu_is_mmp3_b0()       (0)
+#endif
+
 #endif /* __ASM_MACH_CPUTYPE_H */

diff --git a/arch/arm/mach-mmp/mmp3.c b/arch/arm/mach-mmp/mmp3.c
new file mode 100644 (file)
index 0000000..b0e8696
--- /dev/null
+++ b/arch/arm/mach-mmp/mmp3.c
@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *  Marvell MMP3 aka PXA2128 aka 88AP2128 support
+ *
+ *  Copyright (C) 2019 Lubomir Rintel <lkundrak@v3.sk>
+ */
+
+#include <linux/io.h>
+#include <linux/irqchip.h>
+#include <linux/of_platform.h>
+#include <linux/clk-provider.h>
+#include <asm/mach/arch.h>
+#include <asm/hardware/cache-l2x0.h>
+
+#include "common.h"
+
+static const char *const mmp3_dt_board_compat[] __initconst = {
+       "marvell,mmp3",
+       NULL,
+};
+
+DT_MACHINE_START(MMP2_DT, "Marvell MMP3")
+       .map_io         = mmp2_map_io,
+       .dt_compat      = mmp3_dt_board_compat,
+       .l2c_aux_val    = 1 << L310_AUX_CTRL_FWA_SHIFT |
+                         L310_AUX_CTRL_DATA_PREFETCH |
+                         L310_AUX_CTRL_INSTR_PREFETCH,
+       .l2c_aux_mask   = 0xc20fffff,
+MACHINE_END

diff --git a/arch/arm/mach-mmp/time.c b/arch/arm/mach-mmp/time.c
index 3f6fd0b..8f4cacb 100644 (file)
--- a/arch/arm/mach-mmp/time.c
+++ b/arch/arm/mach-mmp/time.c
@@ -155,7 +155,8 @@ static void __init timer_config(void)
 
        __raw_writel(0x0, mmp_timer_base + TMR_CER); /* disable */
 
-       ccr &= (cpu_is_mmp2()) ? (TMR_CCR_CS_0(0) | TMR_CCR_CS_1(0)) :
+       ccr &= (cpu_is_mmp2() || cpu_is_mmp3()) ?
+               (TMR_CCR_CS_0(0) | TMR_CCR_CS_1(0)) :
                (TMR_CCR_CS_0(3) | TMR_CCR_CS_1(3));
        __raw_writel(ccr, mmp_timer_base + TMR_CCR);
 

diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
index c44247d..0530beb 100644 (file)
--- a/drivers/clk/Kconfig
+++ b/drivers/clk/Kconfig
@@ -292,6 +292,11 @@ config COMMON_CLK_STM32H7
        help
          Support for stm32h7 SoC family clocks
 
+config COMMON_CLK_MMP2
+       def_bool COMMON_CLK && (MACH_MMP2_DT || MACH_MMP3_DT)
+       help
+         Support for Marvell MMP2 and MMP3 SoC clocks
+
 config COMMON_CLK_BD718XX
        tristate "Clock driver for ROHM BD718x7 PMIC"
        depends on MFD_ROHM_BD718XX || MFD_ROHM_BD70528

diff --git a/drivers/clk/mmp/Makefile b/drivers/clk/mmp/Makefile
index 7bc7ac6..acc141a 100644 (file)
--- a/drivers/clk/mmp/Makefile
+++ b/drivers/clk/mmp/Makefile
@@ -8,7 +8,7 @@ obj-y += clk-apbc.o clk-apmu.o clk-frac.o clk-mix.o clk-gate.o clk.o
 obj-$(CONFIG_RESET_CONTROLLER) += reset.o
 
 obj-$(CONFIG_MACH_MMP_DT) += clk-of-pxa168.o clk-of-pxa910.o
-obj-$(CONFIG_MACH_MMP2_DT) += clk-of-mmp2.o
+obj-$(CONFIG_COMMON_CLK_MMP2) += clk-of-mmp2.o
 
 obj-$(CONFIG_CPU_PXA168) += clk-pxa168.o
 obj-$(CONFIG_CPU_PXA910) += clk-pxa910.o