[PATCH v5 04/10] pinctrl: renesas: add R906G032 driver
Pinctrl/pinconf driver for Renesas RZ/N1 (R906G032) SoC.
This is quite rudimentary right now, and only supports applying a
default pin configuration as specified by the device tree.
Signed-off-by: Ralph Siemsen
Reviewed-by: Marek Vasut
---
(no changes since v5)
Changes in v5:
- add R-b tag
drivers/pinctrl/Makefile | 1 +
drivers/pinctrl/renesas/Kconfig| 7 +
drivers/pinctrl/renesas/Makefile | 1 +
drivers/pinctrl/renesas/pinctrl-rzn1.c | 379 +
include/dt-bindings/pinctrl/rzn1-pinctrl.h | 141
5 files changed, 529 insertions(+)
create mode 100644 drivers/pinctrl/renesas/pinctrl-rzn1.c
create mode 100644 include/dt-bindings/pinctrl/rzn1-pinctrl.h
diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile
index 852adee4b4..fc1f01a02c 100644
--- a/drivers/pinctrl/Makefile
+++ b/drivers/pinctrl/Makefile
@@ -14,6 +14,7 @@ obj-$(CONFIG_PINCTRL_INTEL) += intel/
obj-$(CONFIG_ARCH_MTMIPS) += mtmips/
obj-$(CONFIG_ARCH_NPCM) += nuvoton/
obj-$(CONFIG_ARCH_RMOBILE) += renesas/
+obj-$(CONFIG_ARCH_RZN1) += renesas/
obj-$(CONFIG_PINCTRL_SANDBOX) += pinctrl-sandbox.o
obj-$(CONFIG_PINCTRL_SUNXI)+= sunxi/
obj-$(CONFIG_PINCTRL_UNIPHIER) += uniphier/
diff --git a/drivers/pinctrl/renesas/Kconfig b/drivers/pinctrl/renesas/Kconfig
index 509cdd3fb2..0ea39b4a3f 100644
--- a/drivers/pinctrl/renesas/Kconfig
+++ b/drivers/pinctrl/renesas/Kconfig
@@ -139,3 +139,10 @@ config PINCTRL_PFC_R7S72100
Support pin multiplexing control on Renesas RZ/A1 R7S72100 SoCs.
endif
+
+config PINCTRL_RZN1
+ bool "Renesas RZ/N1 R906G032 pin control driver"
+ depends on RZN1
+ default y if RZN1
+ help
+ Support pin multiplexing control on Renesas RZ/N1 R906G032 SoCs.
diff --git a/drivers/pinctrl/renesas/Makefile b/drivers/pinctrl/renesas/Makefile
index 5cea1423ca..1a61c39d84 100644
--- a/drivers/pinctrl/renesas/Makefile
+++ b/drivers/pinctrl/renesas/Makefile
@@ -20,3 +20,4 @@ obj-$(CONFIG_PINCTRL_PFC_R8A779A0) += pfc-r8a779a0.o
obj-$(CONFIG_PINCTRL_PFC_R8A779F0) += pfc-r8a779f0.o
obj-$(CONFIG_PINCTRL_PFC_R8A779G0) += pfc-r8a779g0.o
obj-$(CONFIG_PINCTRL_PFC_R7S72100) += pfc-r7s72100.o
+obj-$(CONFIG_PINCTRL_RZN1) += pinctrl-rzn1.o
diff --git a/drivers/pinctrl/renesas/pinctrl-rzn1.c
b/drivers/pinctrl/renesas/pinctrl-rzn1.c
new file mode 100644
index 00..fdc43c8e71
--- /dev/null
+++ b/drivers/pinctrl/renesas/pinctrl-rzn1.c
@@ -0,0 +1,379 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2014-2018 Renesas Electronics Europe Limited
+ *
+ * Phil Edworthy
+ * Based on a driver originally written by Michel Pollet at Renesas.
+ */
+
+#include
+
+#include
+#include
+#include
+#include
+#include
+
+/* Field positions and masks in the pinmux registers */
+#define RZN1_L1_PIN_DRIVE_STRENGTH 10
+#define RZN1_L1_PIN_DRIVE_STRENGTH_4MA 0
+#define RZN1_L1_PIN_DRIVE_STRENGTH_6MA 1
+#define RZN1_L1_PIN_DRIVE_STRENGTH_8MA 2
+#define RZN1_L1_PIN_DRIVE_STRENGTH_12MA3
+#define RZN1_L1_PIN_PULL 8
+#define RZN1_L1_PIN_PULL_NONE 0
+#define RZN1_L1_PIN_PULL_UP1
+#define RZN1_L1_PIN_PULL_DOWN 3
+#define RZN1_L1_FUNCTION 0
+#define RZN1_L1_FUNC_MASK 0xf
+#define RZN1_L1_FUNCTION_L20xf
+
+/*
+ * The hardware manual describes two levels of multiplexing, but it's more
+ * logical to think of the hardware as three levels, with level 3 consisting of
+ * the multiplexing for Ethernet MDIO signals.
+ *
+ * Level 1 functions go from 0 to 9, with level 1 function '15' (0xf)
specifying
+ * that level 2 functions are used instead. Level 2 has a lot more options,
+ * going from 0 to 61. Level 3 allows selection of MDIO functions which can be
+ * floating, or one of seven internal peripherals. Unfortunately, there are two
+ * level 2 functions that can select MDIO, and two MDIO channels so we have
four
+ * sets of level 3 functions.
+ *
+ * For this driver, we've compounded the numbers together, so:
+ *0 to 9 is level 1
+ * 10 to 71 is 10 + level 2 number
+ * 72 to 79 is 72 + MDIO0 source for level 2 MDIO function.
+ * 80 to 87 is 80 + MDIO0 source for level 2 MDIO_E1 function.
+ * 88 to 95 is 88 + MDIO1 source for level 2 MDIO function.
+ * 96 to 103 is 96 + MDIO1 source for level 2 MDIO_E1 function.
+ * Examples:
+ * Function 28 corresponds UART0
+ * Function 73 corresponds to MDIO0 to GMAC0
+ *
+ * There are 170 configurable pins (called PL_GPIO in the datasheet).
+ */
+
+/*
+ * Structure detailing the HW registers on the RZ/N1 devices.
+ * Both the Level 1 mux registers and Level 2 mux registers have the same
+ * structure. The only difference is that Level 2 has additional MDIO registers
+ * at the end.
+ */
+struct rzn1_pinctrl_regs {
+ u32 conf[170];
+ u32 pad0[86];
+ u32 status_protect; /* 0x400 */
+ /* MDIO mux registers, level2 only */
+ u32
[PATCH v5 04/10] pinctrl: renesas: add R906G032 driver
Pinctrl/pinconf driver for Renesas RZ/N1 (R906G032) SoC.
This is quite rudimentary right now, and only supports applying a
default pin configuration as specified by the device tree.
Signed-off-by: Ralph Siemsen
Reviewed-by: Marek Vasut
---
Changes in v5:
- add R-b tag
drivers/pinctrl/Makefile | 1 +
drivers/pinctrl/renesas/Kconfig| 7 +
drivers/pinctrl/renesas/Makefile | 1 +
drivers/pinctrl/renesas/pinctrl-rzn1.c | 379 +
include/dt-bindings/pinctrl/rzn1-pinctrl.h | 141
5 files changed, 529 insertions(+)
create mode 100644 drivers/pinctrl/renesas/pinctrl-rzn1.c
create mode 100644 include/dt-bindings/pinctrl/rzn1-pinctrl.h
diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile
index 852adee4b4..fc1f01a02c 100644
--- a/drivers/pinctrl/Makefile
+++ b/drivers/pinctrl/Makefile
@@ -14,6 +14,7 @@ obj-$(CONFIG_PINCTRL_INTEL) += intel/
obj-$(CONFIG_ARCH_MTMIPS) += mtmips/
obj-$(CONFIG_ARCH_NPCM) += nuvoton/
obj-$(CONFIG_ARCH_RMOBILE) += renesas/
+obj-$(CONFIG_ARCH_RZN1) += renesas/
obj-$(CONFIG_PINCTRL_SANDBOX) += pinctrl-sandbox.o
obj-$(CONFIG_PINCTRL_SUNXI)+= sunxi/
obj-$(CONFIG_PINCTRL_UNIPHIER) += uniphier/
diff --git a/drivers/pinctrl/renesas/Kconfig b/drivers/pinctrl/renesas/Kconfig
index 509cdd3fb2..0ea39b4a3f 100644
--- a/drivers/pinctrl/renesas/Kconfig
+++ b/drivers/pinctrl/renesas/Kconfig
@@ -139,3 +139,10 @@ config PINCTRL_PFC_R7S72100
Support pin multiplexing control on Renesas RZ/A1 R7S72100 SoCs.
endif
+
+config PINCTRL_RZN1
+ bool "Renesas RZ/N1 R906G032 pin control driver"
+ depends on RZN1
+ default y if RZN1
+ help
+ Support pin multiplexing control on Renesas RZ/N1 R906G032 SoCs.
diff --git a/drivers/pinctrl/renesas/Makefile b/drivers/pinctrl/renesas/Makefile
index 5cea1423ca..1a61c39d84 100644
--- a/drivers/pinctrl/renesas/Makefile
+++ b/drivers/pinctrl/renesas/Makefile
@@ -20,3 +20,4 @@ obj-$(CONFIG_PINCTRL_PFC_R8A779A0) += pfc-r8a779a0.o
obj-$(CONFIG_PINCTRL_PFC_R8A779F0) += pfc-r8a779f0.o
obj-$(CONFIG_PINCTRL_PFC_R8A779G0) += pfc-r8a779g0.o
obj-$(CONFIG_PINCTRL_PFC_R7S72100) += pfc-r7s72100.o
+obj-$(CONFIG_PINCTRL_RZN1) += pinctrl-rzn1.o
diff --git a/drivers/pinctrl/renesas/pinctrl-rzn1.c
b/drivers/pinctrl/renesas/pinctrl-rzn1.c
new file mode 100644
index 00..fdc43c8e71
--- /dev/null
+++ b/drivers/pinctrl/renesas/pinctrl-rzn1.c
@@ -0,0 +1,379 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2014-2018 Renesas Electronics Europe Limited
+ *
+ * Phil Edworthy
+ * Based on a driver originally written by Michel Pollet at Renesas.
+ */
+
+#include
+
+#include
+#include
+#include
+#include
+#include
+
+/* Field positions and masks in the pinmux registers */
+#define RZN1_L1_PIN_DRIVE_STRENGTH 10
+#define RZN1_L1_PIN_DRIVE_STRENGTH_4MA 0
+#define RZN1_L1_PIN_DRIVE_STRENGTH_6MA 1
+#define RZN1_L1_PIN_DRIVE_STRENGTH_8MA 2
+#define RZN1_L1_PIN_DRIVE_STRENGTH_12MA3
+#define RZN1_L1_PIN_PULL 8
+#define RZN1_L1_PIN_PULL_NONE 0
+#define RZN1_L1_PIN_PULL_UP1
+#define RZN1_L1_PIN_PULL_DOWN 3
+#define RZN1_L1_FUNCTION 0
+#define RZN1_L1_FUNC_MASK 0xf
+#define RZN1_L1_FUNCTION_L20xf
+
+/*
+ * The hardware manual describes two levels of multiplexing, but it's more
+ * logical to think of the hardware as three levels, with level 3 consisting of
+ * the multiplexing for Ethernet MDIO signals.
+ *
+ * Level 1 functions go from 0 to 9, with level 1 function '15' (0xf)
specifying
+ * that level 2 functions are used instead. Level 2 has a lot more options,
+ * going from 0 to 61. Level 3 allows selection of MDIO functions which can be
+ * floating, or one of seven internal peripherals. Unfortunately, there are two
+ * level 2 functions that can select MDIO, and two MDIO channels so we have
four
+ * sets of level 3 functions.
+ *
+ * For this driver, we've compounded the numbers together, so:
+ *0 to 9 is level 1
+ * 10 to 71 is 10 + level 2 number
+ * 72 to 79 is 72 + MDIO0 source for level 2 MDIO function.
+ * 80 to 87 is 80 + MDIO0 source for level 2 MDIO_E1 function.
+ * 88 to 95 is 88 + MDIO1 source for level 2 MDIO function.
+ * 96 to 103 is 96 + MDIO1 source for level 2 MDIO_E1 function.
+ * Examples:
+ * Function 28 corresponds UART0
+ * Function 73 corresponds to MDIO0 to GMAC0
+ *
+ * There are 170 configurable pins (called PL_GPIO in the datasheet).
+ */
+
+/*
+ * Structure detailing the HW registers on the RZ/N1 devices.
+ * Both the Level 1 mux registers and Level 2 mux registers have the same
+ * structure. The only difference is that Level 2 has additional MDIO registers
+ * at the end.
+ */
+struct rzn1_pinctrl_regs {
+ u32 conf[170];
+ u32 pad0[86];
+ u32 status_protect; /* 0x400 */
+ /* MDIO mux registers, level2 only */
+ u32 l2_mdio[2];
+};
+
