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From: Jernej Skrabec <jernej.skrabec@siol.net>
To: u-boot@lists.denx.de
Subject: [PATCH v2 06/21] sunxi: Add support for I2C on H6 like SoCs
Date: Mon, 11 Jan 2021 21:11:38 +0100	[thread overview]
Message-ID: <20210111201153.1800440-7-jernej.skrabec@siol.net> (raw)
In-Reply-To: <20210111201153.1800440-1-jernej.skrabec@siol.net>

I2C support, especially R_I2C port, will be needed in future. Upcoming
support for H616 will need R_I2C to adjust DRAM voltage.

Reviewed-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
---
 .../include/asm/arch-sunxi/clock_sun50i_h6.h  |  1 +
 arch/arm/mach-sunxi/Kconfig                   |  2 +-
 arch/arm/mach-sunxi/clock_sun50i_h6.c         | 29 +++++++++++++++++++
 3 files changed, 31 insertions(+), 1 deletion(-)

diff --git a/arch/arm/include/asm/arch-sunxi/clock_sun50i_h6.h b/arch/arm/include/asm/arch-sunxi/clock_sun50i_h6.h
index 426069fc69a4..e83e84ab6cab 100644
--- a/arch/arm/include/asm/arch-sunxi/clock_sun50i_h6.h
+++ b/arch/arm/include/asm/arch-sunxi/clock_sun50i_h6.h
@@ -297,6 +297,7 @@ struct sunxi_ccm_reg {
 
 /* Module gate/reset shift*/
 #define RESET_SHIFT			(16)
+#define GATE_SHIFT			(0)
 
 /* DRAM clock bit field */
 #define DRAM_MOD_RESET			BIT(30)
diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig
index bd82c0ef3ee4..b23ed695cd1c 100644
--- a/arch/arm/mach-sunxi/Kconfig
+++ b/arch/arm/mach-sunxi/Kconfig
@@ -730,7 +730,7 @@ config I2C3_ENABLE
 	See I2C0_ENABLE help text.
 endif
 
-if SUNXI_GEN_SUN6I
+if SUNXI_GEN_SUN6I || SUN50I_GEN_H6
 config R_I2C_ENABLE
 	bool "Enable the PRCM I2C/TWI controller"
 	# This is used for the pmic on H3
diff --git a/arch/arm/mach-sunxi/clock_sun50i_h6.c b/arch/arm/mach-sunxi/clock_sun50i_h6.c
index ba8a26eb0d36..6bd466915c11 100644
--- a/arch/arm/mach-sunxi/clock_sun50i_h6.c
+++ b/arch/arm/mach-sunxi/clock_sun50i_h6.c
@@ -2,6 +2,7 @@
 #include <asm/io.h>
 #include <asm/arch/cpu.h>
 #include <asm/arch/clock.h>
+#include <asm/arch/prcm.h>
 
 #ifdef CONFIG_SPL_BUILD
 void clock_init_safe(void)
@@ -92,3 +93,31 @@ unsigned int clock_get_pll6(void)
 	/* The register defines PLL6-4X, not plain PLL6 */
 	return 24000000 / 4 * n / div1 / div2;
 }
+
+int clock_twi_onoff(int port, int state)
+{
+	struct sunxi_ccm_reg *const ccm =
+		(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
+	struct sunxi_prcm_reg *const prcm =
+		(struct sunxi_prcm_reg *)SUNXI_PRCM_BASE;
+	u32 value, *ptr;
+	int shift;
+
+	value = BIT(GATE_SHIFT) | BIT (RESET_SHIFT);
+
+	if (port == 5) {
+		shift = 0;
+		ptr = &prcm->twi_gate_reset;
+	} else {
+		shift = port;
+		ptr = &ccm->twi_gate_reset;
+	}
+
+	/* set the apb clock gate and reset for twi */
+	if (state)
+		setbits_le32(ptr, value << shift);
+	else
+		clrbits_le32(ptr, value << shift);
+
+	return 0;
+}
-- 
2.30.0

  parent reply	other threads:[~2021-01-11 20:11 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-11 20:11 [PATCH v2 00/21] sunxi: Introduce H616 support Jernej Skrabec
2021-01-11 20:11 ` [PATCH v2 01/21] sunxi: Add support for AXP305 PMIC Jernej Skrabec
2021-01-11 20:11 ` [PATCH v2 02/21] sunxi: Introduce common symbol for H6 like SoCs Jernej Skrabec
2021-01-12  2:04   ` [linux-sunxi] " Samuel Holland
2021-01-22  1:13   ` Andre Przywara
2021-01-11 20:11 ` [PATCH v2 03/21] mmc: sunxi: Replace H6 ifdefs with H6 gen macro Jernej Skrabec
2021-01-11 22:18   ` Jaehoon Chung
2021-01-11 20:11 ` [PATCH v2 04/21] i2c: mvtwsi: sunxi: update macro Jernej Skrabec
2021-01-11 20:11 ` [PATCH v2 05/21] sunxi: prcm: Add memory map for H6 like SoCs Jernej Skrabec
2021-01-12  2:05   ` [linux-sunxi] " Samuel Holland
2021-01-22  1:14   ` Andre Przywara
2021-01-22  1:43     ` [linux-sunxi] " Samuel Holland
2021-01-11 20:11 ` Jernej Skrabec [this message]
2021-01-22  1:16   ` [PATCH v2 06/21] sunxi: Add support for I2C on " Andre Przywara
2021-01-11 20:11 ` [PATCH v2 07/21] sunxi: support loading with SPL > 32KB Jernej Skrabec
2021-01-12  3:36   ` [linux-sunxi] " Samuel Holland
2021-01-11 20:11 ` [PATCH v2 08/21] sunxi: introduce support for H616 clocks Jernej Skrabec
2021-01-22  1:17   ` Andre Przywara
2021-01-22  6:21     ` Jernej Škrabec
2021-01-11 20:11 ` [PATCH v2 09/21] sunxi: add support for H616 uart0 Jernej Skrabec
2021-01-22  1:17   ` Andre Przywara
2021-01-11 20:11 ` [PATCH v2 10/21] sunxi: add support for R_I2C on H616 Jernej Skrabec
2021-01-22  1:18   ` Andre Przywara
2021-01-11 20:11 ` [PATCH v2 11/21] sunxi: Add H616 DRAM support Jernej Skrabec
2021-01-22 18:06   ` Andre Przywara
2021-01-11 20:11 ` [PATCH v2 12/21] mmc: sunxi: Refactor mod clock register offset Jernej Skrabec
2021-01-11 20:11 ` [PATCH v2 13/21] net: sun8i-emac: Always clear syscon EPHY register Jernej Skrabec
2021-01-11 20:11 ` [PATCH v2 14/21] sunxi: Add support for H616 SoC Jernej Skrabec
2021-01-23  1:57   ` Andre Przywara
2021-01-11 20:11 ` [PATCH v2 15/21] mmc: sunxi: Add H616 clock offset Jernej Skrabec
2021-01-11 22:18   ` Jaehoon Chung
2021-01-23  1:58   ` Andre Przywara
2021-01-11 20:11 ` [PATCH v2 16/21] sunxi: Add H616 FEL support Jernej Skrabec
2021-01-20  5:46   ` Samuel Holland
2021-01-23  2:00   ` Andre Przywara
2021-01-11 20:11 ` [PATCH v2 17/21] net: sun8i-emac: Determine pinmux based on SoC, not EMAC type Jernej Skrabec
2021-01-11 20:11 ` [PATCH v2 18/21] arm: sunxi: add initial H616 DTSI and headers Jernej Skrabec
2021-01-24  2:17   ` Andre Przywara
2021-01-11 20:11 ` [PATCH v2 19/21] sunxi: gpio: introduce compatible for H616 Jernej Skrabec
2021-01-11 20:11 ` [PATCH v2 20/21] clk: sunxi: Add support for H616 clocks Jernej Skrabec
2021-01-24  2:17   ` Andre Przywara
2021-01-11 20:11 ` [PATCH v2 21/21] sunxi: Add support for OrangePi Zero2 Jernej Skrabec
2021-01-24  2:18   ` Andre Przywara
2021-01-11 20:17 ` [PATCH v2 00/21] sunxi: Introduce H616 support Jernej Škrabec
2021-01-24  2:19 ` Andre Przywara

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