[PATCH 6.1.y-cip 0/6] Add RZ/{G2L,G2LC,V2L} MTU3 PWM support.

[PATCH 6.1.y-cip 0/6] Add RZ/{G2L,G2LC,V2L} MTU3 PWM support.

[Biju Das]

This patch series aims to add support for RZ/{G2L,G2LC,V2L}
MTU3 PWM driver.

All the patches are cherry-picked from the mainline
except patch#4-patch#6. The trivial patches#4-#6 are
cherry-picked from next.

Biju Das (5):
  arm64: defconfig: Enable Renesas MTU3a counter config
  pwm: Add Renesas RZ/G2L MTU3a PWM driver
  arm64: dts: renesas: rzg2l-smarc: Add support for enabling MTU3
  arm64: dts: renesas: rzg2lc-smarc: Add support for enabling MTU3
  arm64: defconfig: Enable Renesas MTU3a PWM config

Lad Prabhakar (1):
  arm64: dts: renesas: rzg2lc-smarc: Include SoM DTSI into board DTS

 .../boot/dts/renesas/r9a07g044c2-smarc.dts    |  42 ++
 .../boot/dts/renesas/r9a07g044l2-smarc.dts    |  21 +
 .../boot/dts/renesas/r9a07g054l2-smarc.dts    |  20 +
 .../dts/renesas/rzg2l-smarc-pinfunction.dtsi  |  20 +
 arch/arm64/boot/dts/renesas/rzg2l-smarc.dtsi  |  23 +-
 .../dts/renesas/rzg2lc-smarc-pinfunction.dtsi |   9 +
 arch/arm64/boot/dts/renesas/rzg2lc-smarc.dtsi |  42 +-
 arch/arm64/configs/defconfig                  |   4 +
 drivers/pwm/Kconfig                           |  11 +
 drivers/pwm/Makefile                          |   1 +
 drivers/pwm/pwm-rz-mtu3.c                     | 551 ++++++++++++++++++
 11 files changed, 712 insertions(+), 32 deletions(-)
 create mode 100644 drivers/pwm/pwm-rz-mtu3.c

-- 
2.25.1

[PATCH 6.1.y-cip 1/6] arm64: dts: renesas: rzg2lc-smarc: Include SoM DTSI into board DTS

[Biju Das]

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

commit 29df86bbbad007eb1863c9d31473122c87c3e771 upstream.

Move including the rzg2lc-smarc-som.dtsi from the carrier board
rzg2lc-smarc.dtsi to the actual RZ/G2LC SMARC EVK board dts
r9a07g044c2-smarc.dts. Also move the SW1 related macros along with
PMOD1_SER0 to board dts so that we have all the configuration options
in the same file.

This patch is to keep consistency with other SMARC EVKs (RZ/G2L, RZ/G2UL)
and it makes sense not include the SoM into the carrier board as we might
in future have a different carrier board with the same SoM.

Suggested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20220919092130.93074-1-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
---
 .../boot/dts/renesas/r9a07g044c2-smarc.dts    | 30 +++++++++++++++++++
 arch/arm64/boot/dts/renesas/rzg2lc-smarc.dtsi | 28 -----------------
 2 files changed, 30 insertions(+), 28 deletions(-)

diff --git a/arch/arm64/boot/dts/renesas/r9a07g044c2-smarc.dts b/arch/arm64/boot/dts/renesas/r9a07g044c2-smarc.dts
index fc34058002e2..f67a6f125d9c 100644
--- a/arch/arm64/boot/dts/renesas/r9a07g044c2-smarc.dts
+++ b/arch/arm64/boot/dts/renesas/r9a07g044c2-smarc.dts
@@ -6,7 +6,37 @@
  */
 
 /dts-v1/;
+
+/*
+ * DIP-Switch SW1 setting on SoM
+ * 1 : High; 0: Low
+ * SW1-2 : SW_SD0_DEV_SEL	(1: eMMC; 0: uSD)
+ * SW1-3 : SW_SCIF_CAN		(1: CAN1; 0: SCIF1)
+ * SW1-4 : SW_RSPI_CAN		(1: CAN1; 0: RSPI1)
+ * SW1-5 : SW_I2S0_I2S1		(1: I2S2 (HDMI audio); 0: I2S0)
+ * Please change below macros according to SW1 setting
+ */
+
+#define SW_SD0_DEV_SEL	1
+
+#define SW_SCIF_CAN	0
+#if (SW_SCIF_CAN)
+/* Due to HW routing, SW_RSPI_CAN is always 0 when SW_SCIF_CAN is set to 1 */
+#define SW_RSPI_CAN	0
+#else
+/* Please set SW_RSPI_CAN. Default value is 1 */
+#define SW_RSPI_CAN	1
+#endif
+
+#if (SW_SCIF_CAN && SW_RSPI_CAN)
+#error "Can not set 1 to both SW_SCIF_CAN and SW_RSPI_CAN due to HW routing"
+#endif
+
+/* comment the #define statement to disable SCIF1 (SER0) on PMOD1 (CN7) */
+#define PMOD1_SER0	1
+
 #include "r9a07g044c2.dtsi"
+#include "rzg2lc-smarc-som.dtsi"
 #include "rzg2lc-smarc.dtsi"
 
 / {
diff --git a/arch/arm64/boot/dts/renesas/rzg2lc-smarc.dtsi b/arch/arm64/boot/dts/renesas/rzg2lc-smarc.dtsi
index 6be25a8a28db..b6bd27196d88 100644
--- a/arch/arm64/boot/dts/renesas/rzg2lc-smarc.dtsi
+++ b/arch/arm64/boot/dts/renesas/rzg2lc-smarc.dtsi
@@ -8,37 +8,9 @@
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/pinctrl/rzg2l-pinctrl.h>
 
-/*
- * DIP-Switch SW1 setting on SoM
- * 1 : High; 0: Low
- * SW1-2 : SW_SD0_DEV_SEL	(1: eMMC; 0: uSD)
- * SW1-3 : SW_SCIF_CAN		(1: CAN1; 0: SCIF1)
- * SW1-4 : SW_RSPI_CAN		(1: CAN1; 0: RSPI1)
- * SW1-5 : SW_I2S0_I2S1		(1: I2S2 (HDMI audio); 0: I2S0)
- * Please change below macros according to SW1 setting
- */
-
-#define SW_SD0_DEV_SEL	1
-
-#define SW_SCIF_CAN	0
-#if (SW_SCIF_CAN)
-/* Due to HW routing, SW_RSPI_CAN is always 0 when SW_SCIF_CAN is set to 1 */
-#define SW_RSPI_CAN	0
-#else
-/* Please set SW_RSPI_CAN. Default value is 1 */
-#define SW_RSPI_CAN	1
-#endif
-
-#if (SW_SCIF_CAN && SW_RSPI_CAN)
-#error "Can not set 1 to both SW_SCIF_CAN and SW_RSPI_CAN due to HW routing"
-#endif
-
-#include "rzg2lc-smarc-som.dtsi"
 #include "rzg2lc-smarc-pinfunction.dtsi"
 #include "rz-smarc-common.dtsi"
 
-/* comment the #define statement to disable SCIF1 (SER0) on PMOD1 (CN7) */
-#define PMOD1_SER0	1
 
 / {
 	aliases {
-- 
2.25.1

[PATCH 6.1.y-cip 2/6] arm64: defconfig: Enable Renesas MTU3a counter config

[Biju Das]

commit cacde5cc9dbc1af46a5d35efd17365bc3324b4fb upstream.

Enable MFD & counter related configs for Renesas MTU3a Counter as
it is populated on RZ/{G2L, LC, UL} and RZ/V2L SMARC EVKs.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230417100607.309068-1-biju.das.jz@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
---
 arch/arm64/configs/defconfig | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index 9110a0f1b272..3164657aa297 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -653,6 +653,7 @@ CONFIG_MFD_SPMI_PMIC=y
 CONFIG_MFD_RK808=y
 CONFIG_MFD_SEC_CORE=y
 CONFIG_MFD_SL28CPLD=y
+CONFIG_RZ_MTU3=y
 CONFIG_MFD_ROHM_BD718XX=y
 CONFIG_MFD_WCD934X=m
 CONFIG_REGULATOR_FIXED_VOLTAGE=y
@@ -1309,6 +1310,8 @@ CONFIG_INTERCONNECT_QCOM_SM8150=m
 CONFIG_INTERCONNECT_QCOM_SM8250=m
 CONFIG_INTERCONNECT_QCOM_SM8350=m
 CONFIG_INTERCONNECT_QCOM_SM8450=m
+CONFIG_COUNTER=m
+CONFIG_RZ_MTU3_CNT=m
 CONFIG_EXT2_FS=y
 CONFIG_EXT3_FS=y
 CONFIG_EXT4_FS_POSIX_ACL=y
-- 
2.25.1

[PATCH 6.1.y-cip 3/6] pwm: Add Renesas RZ/G2L MTU3a PWM driver

[Biju Das]

commit 254d3a727421ccc935f085eaa9bae51cb6c9df25 upstream.

The RZ/G2L Multi-Function Timer Pulse Unit 3 (a.k.a MTU3a) uses
one counter and two match components to configure duty_cycle
and period to generate PWM output waveform.

Add basic support for RZ/G2L MTU3a PWM driver by creating separate
PWM channels for each IOs.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
---
 drivers/pwm/Kconfig       |  11 +
 drivers/pwm/Makefile      |   1 +
 drivers/pwm/pwm-rz-mtu3.c | 551 ++++++++++++++++++++++++++++++++++++++
 3 files changed, 563 insertions(+)
 create mode 100644 drivers/pwm/pwm-rz-mtu3.c

diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig
index 60d13a949bc5..18a7cc6a7fc9 100644
--- a/drivers/pwm/Kconfig
+++ b/drivers/pwm/Kconfig
@@ -481,6 +481,17 @@ config PWM_ROCKCHIP
 	  Generic PWM framework driver for the PWM controller found on
 	  Rockchip SoCs.
 
+config PWM_RZ_MTU3
+	tristate "Renesas RZ/G2L MTU3a PWM Timer support"
+	depends on RZ_MTU3 || COMPILE_TEST
+	depends on HAS_IOMEM
+	help
+	  This driver exposes the MTU3a PWM Timer controller found in Renesas
+	  RZ/G2L like chips through the PWM API.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called pwm-rz-mtu3.
+
 config PWM_SAMSUNG
 	tristate "Samsung PWM support"
 	depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST
diff --git a/drivers/pwm/Makefile b/drivers/pwm/Makefile
index 7bf1a29f02b8..b85fc9fba326 100644
--- a/drivers/pwm/Makefile
+++ b/drivers/pwm/Makefile
@@ -44,6 +44,7 @@ obj-$(CONFIG_PWM_RASPBERRYPI_POE)	+= pwm-raspberrypi-poe.o
 obj-$(CONFIG_PWM_RCAR)		+= pwm-rcar.o
 obj-$(CONFIG_PWM_RENESAS_TPU)	+= pwm-renesas-tpu.o
 obj-$(CONFIG_PWM_ROCKCHIP)	+= pwm-rockchip.o
+obj-$(CONFIG_PWM_RZ_MTU3)	+= pwm-rz-mtu3.o
 obj-$(CONFIG_PWM_SAMSUNG)	+= pwm-samsung.o
 obj-$(CONFIG_PWM_SIFIVE)	+= pwm-sifive.o
 obj-$(CONFIG_PWM_SL28CPLD)	+= pwm-sl28cpld.o
diff --git a/drivers/pwm/pwm-rz-mtu3.c b/drivers/pwm/pwm-rz-mtu3.c
new file mode 100644
index 000000000000..bed8bd671e37
--- /dev/null
+++ b/drivers/pwm/pwm-rz-mtu3.c
@@ -0,0 +1,551 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Renesas RZ/G2L MTU3a PWM Timer driver
+ *
+ * Copyright (C) 2023 Renesas Electronics Corporation
+ *
+ * Hardware manual for this IP can be found here
+ * https://www.renesas.com/eu/en/document/mah/rzg2l-group-rzg2lc-group-users-manual-hardware-0?language=en
+ *
+ * Limitations:
+ * - When PWM is disabled, the output is driven to Hi-Z.
+ * - While the hardware supports both polarities, the driver (for now)
+ *   only handles normal polarity.
+ * - HW uses one counter and two match components to configure duty_cycle
+ *   and period.
+ * - Multi-Function Timer Pulse Unit (a.k.a MTU) has 7 HW channels for PWM
+ *   operations. (The channels are MTU{0..4, 6, 7}.)
+ * - MTU{1, 2} channels have a single IO, whereas all other HW channels have
+ *   2 IOs.
+ * - Each IO is modelled as an independent PWM channel.
+ * - rz_mtu3_channel_io_map table is used to map the PWM channel to the
+ *   corresponding HW channel as there are difference in number of IOs
+ *   between HW channels.
+ */
+
+#include <linux/bitfield.h>
+#include <linux/clk.h>
+#include <linux/limits.h>
+#include <linux/mfd/rz-mtu3.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/pwm.h>
+#include <linux/time.h>
+
+#define RZ_MTU3_MAX_PWM_CHANNELS	12
+#define RZ_MTU3_MAX_HW_CHANNELS		7
+
+/**
+ * struct rz_mtu3_channel_io_map - MTU3 pwm channel map
+ *
+ * @base_pwm_number: First PWM of a channel
+ * @num: number of IOs on the HW channel.
+ */
+struct rz_mtu3_channel_io_map {
+	u8 base_pwm_number;
+	u8 num_channel_ios;
+};
+
+/**
+ * struct rz_mtu3_pwm_channel - MTU3 pwm channel data
+ *
+ * @mtu: MTU3 channel data
+ * @map: MTU3 pwm channel map
+ */
+struct rz_mtu3_pwm_channel {
+	struct rz_mtu3_channel *mtu;
+	const struct rz_mtu3_channel_io_map *map;
+};
+
+/**
+ * struct rz_mtu3_pwm_chip - MTU3 pwm private data
+ *
+ * @chip: MTU3 pwm chip data
+ * @clk: MTU3 module clock
+ * @lock: Lock to prevent concurrent access for usage count
+ * @rate: MTU3 clock rate
+ * @user_count: MTU3 usage count
+ * @enable_count: MTU3 enable count
+ * @prescale: MTU3 prescale
+ * @channel_data: MTU3 pwm channel data
+ */
+
+struct rz_mtu3_pwm_chip {
+	struct pwm_chip chip;
+	struct clk *clk;
+	struct mutex lock;
+	unsigned long rate;
+	u32 user_count[RZ_MTU3_MAX_HW_CHANNELS];
+	u32 enable_count[RZ_MTU3_MAX_HW_CHANNELS];
+	u8 prescale[RZ_MTU3_MAX_HW_CHANNELS];
+	struct rz_mtu3_pwm_channel channel_data[RZ_MTU3_MAX_HW_CHANNELS];
+};
+
+/*
+ * The MTU channels are {0..4, 6, 7} and the number of IO on MTU1
+ * and MTU2 channel is 1 compared to 2 on others.
+ */
+static const struct rz_mtu3_channel_io_map channel_map[] = {
+	{ 0, 2 }, { 2, 1 }, { 3, 1 }, { 4, 2 }, { 6, 2 }, { 8, 2 }, { 10, 2 }
+};
+
+static inline struct rz_mtu3_pwm_chip *to_rz_mtu3_pwm_chip(struct pwm_chip *chip)
+{
+	return container_of(chip, struct rz_mtu3_pwm_chip, chip);
+}
+
+static void rz_mtu3_pwm_read_tgr_registers(struct rz_mtu3_pwm_channel *priv,
+					   u16 reg_pv_offset, u16 *pv_val,
+					   u16 reg_dc_offset, u16 *dc_val)
+{
+	*pv_val = rz_mtu3_16bit_ch_read(priv->mtu, reg_pv_offset);
+	*dc_val = rz_mtu3_16bit_ch_read(priv->mtu, reg_dc_offset);
+}
+
+static void rz_mtu3_pwm_write_tgr_registers(struct rz_mtu3_pwm_channel *priv,
+					    u16 reg_pv_offset, u16 pv_val,
+					    u16 reg_dc_offset, u16 dc_val)
+{
+	rz_mtu3_16bit_ch_write(priv->mtu, reg_pv_offset, pv_val);
+	rz_mtu3_16bit_ch_write(priv->mtu, reg_dc_offset, dc_val);
+}
+
+static u8 rz_mtu3_pwm_calculate_prescale(struct rz_mtu3_pwm_chip *rz_mtu3,
+					 u64 period_cycles)
+{
+	u32 prescaled_period_cycles;
+	u8 prescale;
+
+	/*
+	 * Supported prescale values are 1, 4, 16 and 64.
+	 * TODO: Support prescale values 2, 8, 32, 256 and 1024.
+	 */
+	prescaled_period_cycles = period_cycles >> 16;
+	if (prescaled_period_cycles >= 16)
+		prescale = 3;
+	else
+		prescale = (fls(prescaled_period_cycles) + 1) / 2;
+
+	return prescale;
+}
+
+static struct rz_mtu3_pwm_channel *
+rz_mtu3_get_channel(struct rz_mtu3_pwm_chip *rz_mtu3_pwm, u32 hwpwm)
+{
+	struct rz_mtu3_pwm_channel *priv = rz_mtu3_pwm->channel_data;
+	unsigned int ch;
+
+	for (ch = 0; ch < RZ_MTU3_MAX_HW_CHANNELS; ch++, priv++) {
+		if (priv->map->base_pwm_number + priv->map->num_channel_ios > hwpwm)
+			break;
+	}
+
+	return priv;
+}
+
+static bool rz_mtu3_pwm_is_ch_enabled(struct rz_mtu3_pwm_chip *rz_mtu3_pwm,
+				      u32 hwpwm)
+{
+	struct rz_mtu3_pwm_channel *priv;
+	bool is_channel_en;
+	u8 val;
+
+	priv = rz_mtu3_get_channel(rz_mtu3_pwm, hwpwm);
+	is_channel_en = rz_mtu3_is_enabled(priv->mtu);
+	if (!is_channel_en)
+		return false;
+
+	if (priv->map->base_pwm_number == hwpwm)
+		val = rz_mtu3_8bit_ch_read(priv->mtu, RZ_MTU3_TIORH);
+	else
+		val = rz_mtu3_8bit_ch_read(priv->mtu, RZ_MTU3_TIORL);
+
+	return val & RZ_MTU3_TIOR_IOA;
+}
+
+static int rz_mtu3_pwm_request(struct pwm_chip *chip, struct pwm_device *pwm)
+{
+	struct rz_mtu3_pwm_chip *rz_mtu3_pwm = to_rz_mtu3_pwm_chip(chip);
+	struct rz_mtu3_pwm_channel *priv;
+	bool is_mtu3_channel_available;
+	u32 ch;
+
+	priv = rz_mtu3_get_channel(rz_mtu3_pwm, pwm->hwpwm);
+	ch = priv - rz_mtu3_pwm->channel_data;
+
+	mutex_lock(&rz_mtu3_pwm->lock);
+	/*
+	 * Each channel must be requested only once, so if the channel
+	 * serves two PWMs and the other is already requested, skip over
+	 * rz_mtu3_request_channel()
+	 */
+	if (!rz_mtu3_pwm->user_count[ch]) {
+		is_mtu3_channel_available = rz_mtu3_request_channel(priv->mtu);
+		if (!is_mtu3_channel_available) {
+			mutex_unlock(&rz_mtu3_pwm->lock);
+			return -EBUSY;
+		}
+	}
+
+	rz_mtu3_pwm->user_count[ch]++;
+	mutex_unlock(&rz_mtu3_pwm->lock);
+
+	return 0;
+}
+
+static void rz_mtu3_pwm_free(struct pwm_chip *chip, struct pwm_device *pwm)
+{
+	struct rz_mtu3_pwm_chip *rz_mtu3_pwm = to_rz_mtu3_pwm_chip(chip);
+	struct rz_mtu3_pwm_channel *priv;
+	u32 ch;
+
+	priv = rz_mtu3_get_channel(rz_mtu3_pwm, pwm->hwpwm);
+	ch = priv - rz_mtu3_pwm->channel_data;
+
+	mutex_lock(&rz_mtu3_pwm->lock);
+	rz_mtu3_pwm->user_count[ch]--;
+	if (!rz_mtu3_pwm->user_count[ch])
+		rz_mtu3_release_channel(priv->mtu);
+
+	mutex_unlock(&rz_mtu3_pwm->lock);
+}
+
+static int rz_mtu3_pwm_enable(struct rz_mtu3_pwm_chip *rz_mtu3_pwm,
+			      struct pwm_device *pwm)
+{
+	struct rz_mtu3_pwm_channel *priv;
+	u32 ch;
+	u8 val;
+	int rc;
+
+	rc = pm_runtime_resume_and_get(rz_mtu3_pwm->chip.dev);
+	if (rc)
+		return rc;
+
+	priv = rz_mtu3_get_channel(rz_mtu3_pwm, pwm->hwpwm);
+	ch = priv - rz_mtu3_pwm->channel_data;
+	val = RZ_MTU3_TIOR_OC_IOB_TOGGLE | RZ_MTU3_TIOR_OC_IOA_H_COMP_MATCH;
+
+	rz_mtu3_8bit_ch_write(priv->mtu, RZ_MTU3_TMDR1, RZ_MTU3_TMDR1_MD_PWMMODE1);
+	if (priv->map->base_pwm_number == pwm->hwpwm)
+		rz_mtu3_8bit_ch_write(priv->mtu, RZ_MTU3_TIORH, val);
+	else
+		rz_mtu3_8bit_ch_write(priv->mtu, RZ_MTU3_TIORL, val);
+
+	mutex_lock(&rz_mtu3_pwm->lock);
+	if (!rz_mtu3_pwm->enable_count[ch])
+		rz_mtu3_enable(priv->mtu);
+
+	rz_mtu3_pwm->enable_count[ch]++;
+	mutex_unlock(&rz_mtu3_pwm->lock);
+
+	return 0;
+}
+
+static void rz_mtu3_pwm_disable(struct rz_mtu3_pwm_chip *rz_mtu3_pwm,
+				struct pwm_device *pwm)
+{
+	struct rz_mtu3_pwm_channel *priv;
+	u32 ch;
+
+	priv = rz_mtu3_get_channel(rz_mtu3_pwm, pwm->hwpwm);
+	ch = priv - rz_mtu3_pwm->channel_data;
+
+	/* Disable output pins of MTU3 channel */
+	if (priv->map->base_pwm_number == pwm->hwpwm)
+		rz_mtu3_8bit_ch_write(priv->mtu, RZ_MTU3_TIORH, RZ_MTU3_TIOR_OC_RETAIN);
+	else
+		rz_mtu3_8bit_ch_write(priv->mtu, RZ_MTU3_TIORL, RZ_MTU3_TIOR_OC_RETAIN);
+
+	mutex_lock(&rz_mtu3_pwm->lock);
+	rz_mtu3_pwm->enable_count[ch]--;
+	if (!rz_mtu3_pwm->enable_count[ch])
+		rz_mtu3_disable(priv->mtu);
+
+	mutex_unlock(&rz_mtu3_pwm->lock);
+
+	pm_runtime_put_sync(rz_mtu3_pwm->chip.dev);
+}
+
+static int rz_mtu3_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
+				 struct pwm_state *state)
+{
+	struct rz_mtu3_pwm_chip *rz_mtu3_pwm = to_rz_mtu3_pwm_chip(chip);
+	int rc;
+
+	rc = pm_runtime_resume_and_get(chip->dev);
+	if (rc)
+		return rc;
+
+	state->enabled = rz_mtu3_pwm_is_ch_enabled(rz_mtu3_pwm, pwm->hwpwm);
+	if (state->enabled) {
+		struct rz_mtu3_pwm_channel *priv;
+		u8 prescale, val;
+		u16 dc, pv;
+		u64 tmp;
+
+		priv = rz_mtu3_get_channel(rz_mtu3_pwm, pwm->hwpwm);
+		if (priv->map->base_pwm_number == pwm->hwpwm)
+			rz_mtu3_pwm_read_tgr_registers(priv, RZ_MTU3_TGRA, &pv,
+						       RZ_MTU3_TGRB, &dc);
+		else
+			rz_mtu3_pwm_read_tgr_registers(priv, RZ_MTU3_TGRC, &pv,
+						       RZ_MTU3_TGRD, &dc);
+
+		val = rz_mtu3_8bit_ch_read(priv->mtu, RZ_MTU3_TCR);
+		prescale = FIELD_GET(RZ_MTU3_TCR_TPCS, val);
+
+		/* With prescale <= 7 and pv <= 0xffff this doesn't overflow. */
+		tmp = NSEC_PER_SEC * (u64)pv << (2 * prescale);
+		state->period = DIV_ROUND_UP_ULL(tmp, rz_mtu3_pwm->rate);
+		tmp = NSEC_PER_SEC * (u64)dc << (2 * prescale);
+		state->duty_cycle = DIV_ROUND_UP_ULL(tmp, rz_mtu3_pwm->rate);
+
+		if (state->duty_cycle > state->period)
+			state->duty_cycle = state->period;
+	}
+
+	state->polarity = PWM_POLARITY_NORMAL;
+	pm_runtime_put(chip->dev);
+
+	return 0;
+}
+
+static u16 rz_mtu3_pwm_calculate_pv_or_dc(u64 period_or_duty_cycle, u8 prescale)
+{
+	return min(period_or_duty_cycle >> (2 * prescale), (u64)U16_MAX);
+}
+
+static int rz_mtu3_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
+			      const struct pwm_state *state)
+{
+	struct rz_mtu3_pwm_chip *rz_mtu3_pwm = to_rz_mtu3_pwm_chip(chip);
+	struct rz_mtu3_pwm_channel *priv;
+	u64 period_cycles;
+	u64 duty_cycles;
+	u8 prescale;
+	u16 pv, dc;
+	u8 val;
+	u32 ch;
+
+	priv = rz_mtu3_get_channel(rz_mtu3_pwm, pwm->hwpwm);
+	ch = priv - rz_mtu3_pwm->channel_data;
+
+	period_cycles = mul_u64_u32_div(state->period, rz_mtu3_pwm->rate,
+					NSEC_PER_SEC);
+	prescale = rz_mtu3_pwm_calculate_prescale(rz_mtu3_pwm, period_cycles);
+
+	/*
+	 * Prescalar is shared by multiple channels, so prescale can
+	 * NOT be modified when there are multiple channels in use with
+	 * different settings. Modify prescalar if other PWM is off or handle
+	 * it, if current prescale value is less than the one we want to set.
+	 */
+	if (rz_mtu3_pwm->enable_count[ch] > 1) {
+		if (rz_mtu3_pwm->prescale[ch] > prescale)
+			return -EBUSY;
+
+		prescale = rz_mtu3_pwm->prescale[ch];
+	}
+
+	pv = rz_mtu3_pwm_calculate_pv_or_dc(period_cycles, prescale);
+
+	duty_cycles = mul_u64_u32_div(state->duty_cycle, rz_mtu3_pwm->rate,
+				      NSEC_PER_SEC);
+	dc = rz_mtu3_pwm_calculate_pv_or_dc(duty_cycles, prescale);
+
+	/*
+	 * If the PWM channel is disabled, make sure to turn on the clock
+	 * before writing the register.
+	 */
+	if (!pwm->state.enabled) {
+		int rc;
+
+		rc = pm_runtime_resume_and_get(chip->dev);
+		if (rc)
+			return rc;
+	}
+
+	val = RZ_MTU3_TCR_CKEG_RISING | prescale;
+
+	/* Counter must be stopped while updating TCR register */
+	if (rz_mtu3_pwm->prescale[ch] != prescale && rz_mtu3_pwm->enable_count[ch])
+		rz_mtu3_disable(priv->mtu);
+
+	if (priv->map->base_pwm_number == pwm->hwpwm) {
+		rz_mtu3_8bit_ch_write(priv->mtu, RZ_MTU3_TCR,
+				      RZ_MTU3_TCR_CCLR_TGRA | val);
+		rz_mtu3_pwm_write_tgr_registers(priv, RZ_MTU3_TGRA, pv,
+						RZ_MTU3_TGRB, dc);
+	} else {
+		rz_mtu3_8bit_ch_write(priv->mtu, RZ_MTU3_TCR,
+				      RZ_MTU3_TCR_CCLR_TGRC | val);
+		rz_mtu3_pwm_write_tgr_registers(priv, RZ_MTU3_TGRC, pv,
+						RZ_MTU3_TGRD, dc);
+	}
+
+	if (rz_mtu3_pwm->prescale[ch] != prescale) {
+		/*
+		 * Prescalar is shared by multiple channels, we cache the
+		 * prescalar value from first enabled channel and use the same
+		 * value for both channels.
+		 */
+		rz_mtu3_pwm->prescale[ch] = prescale;
+
+		if (rz_mtu3_pwm->enable_count[ch])
+			rz_mtu3_enable(priv->mtu);
+	}
+
+	/* If the PWM is not enabled, turn the clock off again to save power. */
+	if (!pwm->state.enabled)
+		pm_runtime_put(chip->dev);
+
+	return 0;
+}
+
+static int rz_mtu3_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
+			     const struct pwm_state *state)
+{
+	struct rz_mtu3_pwm_chip *rz_mtu3_pwm = to_rz_mtu3_pwm_chip(chip);
+	bool enabled = pwm->state.enabled;
+	int ret;
+
+	if (state->polarity != PWM_POLARITY_NORMAL)
+		return -EINVAL;
+
+	if (!state->enabled) {
+		if (enabled)
+			rz_mtu3_pwm_disable(rz_mtu3_pwm, pwm);
+
+		return 0;
+	}
+
+	mutex_lock(&rz_mtu3_pwm->lock);
+	ret = rz_mtu3_pwm_config(chip, pwm, state);
+	mutex_unlock(&rz_mtu3_pwm->lock);
+	if (ret)
+		return ret;
+
+	if (!enabled)
+		ret = rz_mtu3_pwm_enable(rz_mtu3_pwm, pwm);
+
+	return ret;
+}
+
+static const struct pwm_ops rz_mtu3_pwm_ops = {
+	.request = rz_mtu3_pwm_request,
+	.free = rz_mtu3_pwm_free,
+	.get_state = rz_mtu3_pwm_get_state,
+	.apply = rz_mtu3_pwm_apply,
+	.owner = THIS_MODULE,
+};
+
+static int rz_mtu3_pwm_pm_runtime_suspend(struct device *dev)
+{
+	struct rz_mtu3_pwm_chip *rz_mtu3_pwm = dev_get_drvdata(dev);
+
+	clk_disable_unprepare(rz_mtu3_pwm->clk);
+
+	return 0;
+}
+
+static int rz_mtu3_pwm_pm_runtime_resume(struct device *dev)
+{
+	struct rz_mtu3_pwm_chip *rz_mtu3_pwm = dev_get_drvdata(dev);
+
+	return clk_prepare_enable(rz_mtu3_pwm->clk);
+}
+
+static DEFINE_RUNTIME_DEV_PM_OPS(rz_mtu3_pwm_pm_ops,
+				 rz_mtu3_pwm_pm_runtime_suspend,
+				 rz_mtu3_pwm_pm_runtime_resume, NULL);
+
+static void rz_mtu3_pwm_pm_disable(void *data)
+{
+	struct rz_mtu3_pwm_chip *rz_mtu3_pwm = data;
+
+	clk_rate_exclusive_put(rz_mtu3_pwm->clk);
+	pm_runtime_disable(rz_mtu3_pwm->chip.dev);
+	pm_runtime_set_suspended(rz_mtu3_pwm->chip.dev);
+}
+
+static int rz_mtu3_pwm_probe(struct platform_device *pdev)
+{
+	struct rz_mtu3 *parent_ddata = dev_get_drvdata(pdev->dev.parent);
+	struct rz_mtu3_pwm_chip *rz_mtu3_pwm;
+	struct device *dev = &pdev->dev;
+	unsigned int i, j = 0;
+	int ret;
+
+	rz_mtu3_pwm = devm_kzalloc(&pdev->dev, sizeof(*rz_mtu3_pwm), GFP_KERNEL);
+	if (!rz_mtu3_pwm)
+		return -ENOMEM;
+
+	rz_mtu3_pwm->clk = parent_ddata->clk;
+
+	for (i = 0; i < RZ_MTU_NUM_CHANNELS; i++) {
+		if (i == RZ_MTU3_CHAN_5 || i == RZ_MTU3_CHAN_8)
+			continue;
+
+		rz_mtu3_pwm->channel_data[j].mtu = &parent_ddata->channels[i];
+		rz_mtu3_pwm->channel_data[j].mtu->dev = dev;
+		rz_mtu3_pwm->channel_data[j].map = &channel_map[j];
+		j++;
+	}
+
+	mutex_init(&rz_mtu3_pwm->lock);
+	platform_set_drvdata(pdev, rz_mtu3_pwm);
+	ret = clk_prepare_enable(rz_mtu3_pwm->clk);
+	if (ret)
+		return dev_err_probe(dev, ret, "Clock enable failed\n");
+
+	clk_rate_exclusive_get(rz_mtu3_pwm->clk);
+
+	rz_mtu3_pwm->rate = clk_get_rate(rz_mtu3_pwm->clk);
+	/*
+	 * Refuse clk rates > 1 GHz to prevent overflow later for computing
+	 * period and duty cycle.
+	 */
+	if (rz_mtu3_pwm->rate > NSEC_PER_SEC) {
+		ret = -EINVAL;
+		clk_rate_exclusive_put(rz_mtu3_pwm->clk);
+		goto disable_clock;
+	}
+
+	pm_runtime_set_active(&pdev->dev);
+	pm_runtime_enable(&pdev->dev);
+	rz_mtu3_pwm->chip.dev = &pdev->dev;
+	ret = devm_add_action_or_reset(&pdev->dev, rz_mtu3_pwm_pm_disable,
+				       rz_mtu3_pwm);
+	if (ret < 0)
+		return ret;
+
+	rz_mtu3_pwm->chip.ops = &rz_mtu3_pwm_ops;
+	rz_mtu3_pwm->chip.npwm = RZ_MTU3_MAX_PWM_CHANNELS;
+	ret = devm_pwmchip_add(&pdev->dev, &rz_mtu3_pwm->chip);
+	if (ret)
+		return dev_err_probe(&pdev->dev, ret, "failed to add PWM chip\n");
+
+	pm_runtime_idle(&pdev->dev);
+
+	return 0;
+
+disable_clock:
+	clk_disable_unprepare(rz_mtu3_pwm->clk);
+	return ret;
+}
+
+static struct platform_driver rz_mtu3_pwm_driver = {
+	.driver = {
+		.name = "pwm-rz-mtu3",
+		.pm = pm_ptr(&rz_mtu3_pwm_pm_ops),
+	},
+	.probe = rz_mtu3_pwm_probe,
+};
+module_platform_driver(rz_mtu3_pwm_driver);
+
+MODULE_AUTHOR("Biju Das <biju.das.jz@bp.renesas.com>");
+MODULE_ALIAS("platform:pwm-rz-mtu3");
+MODULE_DESCRIPTION("Renesas RZ/G2L MTU3a PWM Timer Driver");
+MODULE_LICENSE("GPL");
-- 
2.25.1

[PATCH 6.1.y-cip 4/6] arm64: dts: renesas: rzg2l-smarc: Add support for enabling MTU3

[Biju Das]

commit fb9341ebc7df140813d4fbc4a29fddba55a90728 upstream.

Add support for PMOD_MTU3 macro to enable MTU3 node on RZ/{G2,V2}L SMARC
EVK.

The MTU3a PWM pins are muxed with spi1 pins and counter external input
phase clock pins are muxed with scif2 pins. Disable these IPs when
PMOD_MTU3 macro is enabled.

Apart from this, the counter Z phase clock signal is muxed with the
SDHI1 cd signal. So disable SDHI1 IP, when the counter Z phase signal
is enabled.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230706153047.368993-1-biju.das.jz@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
---
 .../boot/dts/renesas/r9a07g044l2-smarc.dts    | 21 +++++++++++++++++
 .../boot/dts/renesas/r9a07g054l2-smarc.dts    | 20 ++++++++++++++++
 .../dts/renesas/rzg2l-smarc-pinfunction.dtsi  | 20 ++++++++++++++++
 arch/arm64/boot/dts/renesas/rzg2l-smarc.dtsi  | 23 ++++++++++++++++---
 4 files changed, 81 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/renesas/r9a07g044l2-smarc.dts b/arch/arm64/boot/dts/renesas/r9a07g044l2-smarc.dts
index bc2af6c92ccd..568d49cfe44a 100644
--- a/arch/arm64/boot/dts/renesas/r9a07g044l2-smarc.dts
+++ b/arch/arm64/boot/dts/renesas/r9a07g044l2-smarc.dts
@@ -6,6 +6,27 @@
  */
 
 /dts-v1/;
+
+/* Enable SCIF2 (SER0) on PMOD1 (CN7) */
+#define PMOD1_SER0	1
+
+/*
+ * To enable MTU3a PWM on PMOD0,
+ * Disable PMOD1_SER0 by setting "#define PMOD1_SER0	0" above and
+ * enable PMOD_MTU3 by setting "#define PMOD_MTU3	1" below.
+ */
+#define PMOD_MTU3	0
+
+#if (PMOD_MTU3 && PMOD1_SER0)
+#error "Cannot set as PMOD_MTU3 and PMOD1_SER0 are mutually exclusive "
+#endif
+
+#define MTU3_COUNTER_Z_PHASE_SIGNAL	0
+
+#if (!PMOD_MTU3 && MTU3_COUNTER_Z_PHASE_SIGNAL)
+#error "Cannot set 1 to MTU3_COUNTER_Z_PHASE_SIGNAL as PMOD_MTU3=0"
+#endif
+
 #include "r9a07g044l2.dtsi"
 #include "rzg2l-smarc-som.dtsi"
 #include "rzg2l-smarc-pinfunction.dtsi"
diff --git a/arch/arm64/boot/dts/renesas/r9a07g054l2-smarc.dts b/arch/arm64/boot/dts/renesas/r9a07g054l2-smarc.dts
index 3d01a4cf0fbe..b3e6016880dd 100644
--- a/arch/arm64/boot/dts/renesas/r9a07g054l2-smarc.dts
+++ b/arch/arm64/boot/dts/renesas/r9a07g054l2-smarc.dts
@@ -6,6 +6,26 @@
  */
 
 /dts-v1/;
+
+/* Enable SCIF2 (SER0) on PMOD1 (CN7) */
+#define PMOD1_SER0	1
+
+/*
+ * To enable MTU3a PWM on PMOD0,
+ * Disable PMOD1_SER0 by setting "#define PMOD1_SER0	0" above and
+ * enable PMOD_MTU3 by setting "#define PMOD_MTU3	1" below.
+ */
+#define PMOD_MTU3	0
+
+#if (PMOD_MTU3 && PMOD1_SER0)
+#error "Cannot set as PMOD_MTU3 and PMOD1_SER0 are mutually exclusive "
+#endif
+
+#define MTU3_COUNTER_Z_PHASE_SIGNAL	0
+#if (!PMOD_MTU3 && MTU3_COUNTER_Z_PHASE_SIGNAL)
+#error "Cannot set 1 to MTU3_COUNTER_Z_PHASE_SIGNAL as PMOD_MTU3=0"
+#endif
+
 #include "r9a07g054l2.dtsi"
 #include "rzg2l-smarc-som.dtsi"
 #include "rzg2l-smarc-pinfunction.dtsi"
diff --git a/arch/arm64/boot/dts/renesas/rzg2l-smarc-pinfunction.dtsi b/arch/arm64/boot/dts/renesas/rzg2l-smarc-pinfunction.dtsi
index 9085d8c76ce1..18c526c7a4cf 100644
--- a/arch/arm64/boot/dts/renesas/rzg2l-smarc-pinfunction.dtsi
+++ b/arch/arm64/boot/dts/renesas/rzg2l-smarc-pinfunction.dtsi
@@ -53,6 +53,26 @@ i2c3_pins: i2c3 {
 			 <RZG2L_PORT_PINMUX(18, 1, 3)>; /* SCL */
 	};
 
+	mtu3_pins: mtu3 {
+		mtu3-ext-clk-input-pin {
+			pinmux = <RZG2L_PORT_PINMUX(48, 0, 4)>, /* MTCLKA */
+				 <RZG2L_PORT_PINMUX(48, 1, 4)>; /* MTCLKB */
+		};
+
+		mtu3-pwm {
+			pinmux = <RZG2L_PORT_PINMUX(44, 0, 4)>, /* MTIOC3A */
+				 <RZG2L_PORT_PINMUX(44, 1, 4)>, /* MTIOC3B */
+				 <RZG2L_PORT_PINMUX(44, 2, 4)>, /* MTIOC3C */
+				 <RZG2L_PORT_PINMUX(44, 3, 4)>; /* MTIOC3D */
+		};
+
+#if MTU3_COUNTER_Z_PHASE_SIGNAL
+		mtu3-zphase-clk {
+			pinmux = <RZG2L_PORT_PINMUX(19, 0, 3)>; /* MTIOC1A */
+		};
+#endif /* MTU3_COUNTER_Z_PHASE_SIGNAL */
+	};
+
 	scif0_pins: scif0 {
 		pinmux = <RZG2L_PORT_PINMUX(38, 0, 1)>,	/* TxD */
 			 <RZG2L_PORT_PINMUX(38, 1, 1)>;	/* RxD */
diff --git a/arch/arm64/boot/dts/renesas/rzg2l-smarc.dtsi b/arch/arm64/boot/dts/renesas/rzg2l-smarc.dtsi
index e180a955b6ac..018c34f841bf 100644
--- a/arch/arm64/boot/dts/renesas/rzg2l-smarc.dtsi
+++ b/arch/arm64/boot/dts/renesas/rzg2l-smarc.dtsi
@@ -8,9 +8,6 @@
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/pinctrl/rzg2l-pinctrl.h>
 
-/* comment the #define statement to disable SCIF2 (SER0) on PMOD1 (CN7) */
-#define PMOD1_SER0	1
-
 / {
 	aliases {
 		serial1 = &scif2;
@@ -36,6 +33,26 @@ wm8978: codec@1a {
 	};
 };
 
+#if PMOD_MTU3
+&mtu3 {
+	pinctrl-0 = <&mtu3_pins>;
+	pinctrl-names = "default";
+
+	status = "okay";
+};
+
+#if MTU3_COUNTER_Z_PHASE_SIGNAL
+/* SDHI cd pin is muxed with counter Z phase signal */
+&sdhi1 {
+	status = "disabled";
+};
+#endif /* MTU3_COUNTER_Z_PHASE_SIGNAL */
+
+&spi1 {
+	status = "disabled";
+};
+#endif /* PMOD_MTU3 */
+
 /*
  * To enable SCIF2 (SER0) on PMOD1 (CN7)
  * SW1 should be at position 2->3 so that SER0_CTS# line is activated
-- 
2.25.1

[PATCH 6.1.y-cip 5/6] arm64: dts: renesas: rzg2lc-smarc: Add support for enabling MTU3

[Biju Das]

commit 742ebf5d715a4d4b9b4800f5b9eb3a2fae9c9282 upstream.

Add support for PMOD_MTU3 macro to enable MTU3 node on RZ/G2LC SMARC
EVK.

The MTU3a PWM pins on PMOD0 are muxed with SPI1. Disable SPI1, when
PMOD_MTU3 macro is enabled.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230707155849.86649-1-biju.das.jz@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
---
 arch/arm64/boot/dts/renesas/r9a07g044c2-smarc.dts  | 12 ++++++++++++
 .../boot/dts/renesas/rzg2lc-smarc-pinfunction.dtsi |  9 +++++++++
 arch/arm64/boot/dts/renesas/rzg2lc-smarc.dtsi      | 14 +++++++++++++-
 3 files changed, 34 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/renesas/r9a07g044c2-smarc.dts b/arch/arm64/boot/dts/renesas/r9a07g044c2-smarc.dts
index f67a6f125d9c..0b90367b6d1e 100644
--- a/arch/arm64/boot/dts/renesas/r9a07g044c2-smarc.dts
+++ b/arch/arm64/boot/dts/renesas/r9a07g044c2-smarc.dts
@@ -35,6 +35,18 @@
 /* comment the #define statement to disable SCIF1 (SER0) on PMOD1 (CN7) */
 #define PMOD1_SER0	1
 
+/*
+ * To enable MTU3a PWM on PMOD0,
+ *  - Set DIP-Switch SW1-4 to Off position.
+ *  - Set SW_RSPI_CAN macro to 0.
+ *  - Set PMOD_MTU3 macro to 1.
+ */
+#define PMOD_MTU3	0
+
+#if (PMOD_MTU3 && SW_RSPI_CAN)
+#error "Cannot set as both PMOD_MTU3 and SW_RSPI_CAN are mutually exclusive"
+#endif
+
 #include "r9a07g044c2.dtsi"
 #include "rzg2lc-smarc-som.dtsi"
 #include "rzg2lc-smarc.dtsi"
diff --git a/arch/arm64/boot/dts/renesas/rzg2lc-smarc-pinfunction.dtsi b/arch/arm64/boot/dts/renesas/rzg2lc-smarc-pinfunction.dtsi
index a78a8def363e..92c64d58349f 100644
--- a/arch/arm64/boot/dts/renesas/rzg2lc-smarc-pinfunction.dtsi
+++ b/arch/arm64/boot/dts/renesas/rzg2lc-smarc-pinfunction.dtsi
@@ -50,6 +50,15 @@ i2c2_pins: i2c2 {
 			 <RZG2L_PORT_PINMUX(42, 4, 1)>; /* SCL */
 	};
 
+	mtu3_pins: mtu3 {
+		mtu3-pwm {
+			pinmux = <RZG2L_PORT_PINMUX(44, 0, 4)>, /* MTIOC3A */
+				 <RZG2L_PORT_PINMUX(44, 1, 4)>, /* MTIOC3B */
+				 <RZG2L_PORT_PINMUX(44, 2, 4)>, /* MTIOC3C */
+				 <RZG2L_PORT_PINMUX(44, 3, 4)>; /* MTIOC3D */
+		};
+	};
+
 	scif0_pins: scif0 {
 		pinmux = <RZG2L_PORT_PINMUX(38, 0, 1)>,	/* TxD */
 			 <RZG2L_PORT_PINMUX(38, 1, 1)>;	/* RxD */
diff --git a/arch/arm64/boot/dts/renesas/rzg2lc-smarc.dtsi b/arch/arm64/boot/dts/renesas/rzg2lc-smarc.dtsi
index b6bd27196d88..664318e3dfb6 100644
--- a/arch/arm64/boot/dts/renesas/rzg2lc-smarc.dtsi
+++ b/arch/arm64/boot/dts/renesas/rzg2lc-smarc.dtsi
@@ -11,7 +11,6 @@
 #include "rzg2lc-smarc-pinfunction.dtsi"
 #include "rz-smarc-common.dtsi"
 
-
 / {
 	aliases {
 		serial1 = &scif1;
@@ -50,6 +49,19 @@ wm8978: codec@1a {
 	};
 };
 
+#if PMOD_MTU3
+&mtu3 {
+	pinctrl-0 = <&mtu3_pins>;
+	pinctrl-names = "default";
+
+	status = "okay";
+};
+
+&spi1 {
+	status = "disabled";
+};
+#endif
+
 /*
  * To enable SCIF1 (SER0) on PMOD1 (CN7), On connector board
  * SW1 should be at position 2->3 so that SER0_CTS# line is activated
-- 
2.25.1

[PATCH 6.1.y-cip 6/6] arm64: defconfig: Enable Renesas MTU3a PWM config

[Biju Das]

commit aaa08e28e0051e88c88cc14bfa0db968b977cc85 upstream.

Enable PWM config for Renesas MTU3a PWM as it is populated on
RZ/{G2L, LC, UL} and RZ/V2L SMARC EVKs.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230703132706.355237-1-biju.das.jz@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
---
 arch/arm64/configs/defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index 3164657aa297..b8174d962370 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -1211,6 +1211,7 @@ CONFIG_PWM_MEDIATEK=m
 CONFIG_PWM_RCAR=m
 CONFIG_PWM_RENESAS_TPU=m
 CONFIG_PWM_ROCKCHIP=y
+CONFIG_PWM_RZ_MTU3=m
 CONFIG_PWM_SAMSUNG=y
 CONFIG_PWM_SL28CPLD=m
 CONFIG_PWM_SUN4I=m
-- 
2.25.1

Re: [PATCH 6.1.y-cip 0/6] Add RZ/{G2L,G2LC,V2L} MTU3 PWM support.

[Pavel Machek]

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Hi!

> This patch series aims to add support for RZ/{G2L,G2LC,V2L}
> MTU3 PWM driver.
> 
> All the patches are cherry-picked from the mainline
> except patch#4-patch#6. The trivial patches#4-#6 are
> cherry-picked from next.

So... this is similar to 5.10, and same comments apply except that
WARN_ON. They are details that should not block merge.

But we really should not be merging patches that are not yet upstream
(because policy and because the commit numbers would change).

So I'd propose testing this and then merging all the patches that are
mainline (for both this and 5.10 series), unless there are other
comments.

Thanks and best regards,
								Pavel
-- 
DENX Software Engineering GmbH,        Managing Director: Erika Unter
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany

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RE: [PATCH 6.1.y-cip 0/6] Add RZ/{G2L,G2LC,V2L} MTU3 PWM support.

[nobuhiro1.iwamatsu]

HI all,

> -----Original Message-----
> From: Biju Das <biju.das.jz@bp.renesas.com>
> Sent: Tuesday, July 18, 2023 11:11 PM
> To: cip-dev@lists.cip-project.org; iwamatsu nobuhiro(岩松 信洋 ○ＤＩＴＣ□
> ＤＩＴ○ＯＳＴ) <nobuhiro1.iwamatsu@toshiba.co.jp>; Pavel Machek
> <pavel@denx.de>
> Cc: Biju Das <biju.das.jz@bp.renesas.com>; Fabrizio Castro
> <fabrizio.castro.jz@renesas.com>
> Subject: [PATCH 6.1.y-cip 0/6] Add RZ/{G2L,G2LC,V2L} MTU3 PWM support.
> 
> This patch series aims to add support for RZ/{G2L,G2LC,V2L}
> MTU3 PWM driver.
> 
> All the patches are cherry-picked from the mainline except patch#4-patch#6.
> The trivial patches#4-#6 are cherry-picked from next.
> 
> Biju Das (5):
>   arm64: defconfig: Enable Renesas MTU3a counter config
>   pwm: Add Renesas RZ/G2L MTU3a PWM driver
>   arm64: dts: renesas: rzg2l-smarc: Add support for enabling MTU3
>   arm64: dts: renesas: rzg2lc-smarc: Add support for enabling MTU3
>   arm64: defconfig: Enable Renesas MTU3a PWM config
> 
> Lad Prabhakar (1):
>   arm64: dts: renesas: rzg2lc-smarc: Include SoM DTSI into board DTS
> 

I reviewed this series, LGTM. I can apply if there are no comments.
Reviewed-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>

Best regards,
  Nobuhiro

RE: [PATCH 6.1.y-cip 0/6] Add RZ/{G2L,G2LC,V2L} MTU3 PWM support.

[Biju Das]

> -----Original Message-----
> From: nobuhiro1.iwamatsu@toshiba.co.jp
> <nobuhiro1.iwamatsu@toshiba.co.jp>
> Sent: Thursday, July 20, 2023 11:00 AM
> To: Biju Das <biju.das.jz@bp.renesas.com>; cip-dev@lists.cip-
> project.org; pavel@denx.de
> Cc: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
> Subject: RE: [PATCH 6.1.y-cip 0/6] Add RZ/{G2L,G2LC,V2L} MTU3 PWM
> support.
> 
> HI all,
> 
> > -----Original Message-----
> > From: Biju Das <biju.das.jz@bp.renesas.com>
> > Sent: Tuesday, July 18, 2023 11:11 PM
> > To: cip-dev@lists.cip-project.org; iwamatsu nobuhiro(岩松 信洋 ○ＤＩＴＣ□
> > ＤＩＴ○ＯＳＴ) <nobuhiro1.iwamatsu@toshiba.co.jp>; Pavel Machek
> > <pavel@denx.de>
> > Cc: Biju Das <biju.das.jz@bp.renesas.com>; Fabrizio Castro
> > <fabrizio.castro.jz@renesas.com>
> > Subject: [PATCH 6.1.y-cip 0/6] Add RZ/{G2L,G2LC,V2L} MTU3 PWM support.
> >
> > This patch series aims to add support for RZ/{G2L,G2LC,V2L}
> > MTU3 PWM driver.
> >
> > All the patches are cherry-picked from the mainline except patch#4-
> patch#6.
> > The trivial patches#4-#6 are cherry-picked from next.
> >
> > Biju Das (5):
> >   arm64: defconfig: Enable Renesas MTU3a counter config
> >   pwm: Add Renesas RZ/G2L MTU3a PWM driver
> >   arm64: dts: renesas: rzg2l-smarc: Add support for enabling MTU3
> >   arm64: dts: renesas: rzg2lc-smarc: Add support for enabling MTU3
> >   arm64: defconfig: Enable Renesas MTU3a PWM config
> >
> > Lad Prabhakar (1):
> >   arm64: dts: renesas: rzg2lc-smarc: Include SoM DTSI into board DTS
> >
> 
> I reviewed this series, LGTM. I can apply if there are no comments.


Thank you!

Cheers,
Biju
> Reviewed-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
> 
> Best regards,
>   Nobuhiro

Re: [PATCH 6.1.y-cip 0/6] Add RZ/{G2L,G2LC,V2L} MTU3 PWM support.

[Pavel Machek]

[-- Attachment #1: Type: text/plain, Size: 517 bytes --]

Hi!

> > Lad Prabhakar (1):
> >   arm64: dts: renesas: rzg2lc-smarc: Include SoM DTSI into board DTS
> > 
> 
> I reviewed this series, LGTM. I can apply if there are no comments.
> Reviewed-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>

Thanks for review, I applied patches that are mainline and pushed
results out.

Best regards,
								Pavel
-- 
DENX Software Engineering GmbH,        Managing Director: Erika Unter
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany

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