From: Andre Przywara <andre.przywara@arm.com>
To: u-boot@lists.denx.de
Subject: [PATCH v2 06/21] sunxi: Add support for I2C on H6 like SoCs
Date: Fri, 22 Jan 2021 01:16:32 +0000 [thread overview]
Message-ID: <20210122011632.31ca41fc@slackpad.fritz.box> (raw)
In-Reply-To: <20210111201153.1800440-7-jernej.skrabec@siol.net>
On Mon, 11 Jan 2021 21:11:38 +0100
Jernej Skrabec <jernej.skrabec@siol.net> wrote:
> 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>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Thanks!
Andre
> ---
> .../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;
> +}
next prev parent reply other threads:[~2021-01-22 1:16 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 ` [PATCH v2 06/21] sunxi: Add support for I2C on " Jernej Skrabec
2021-01-22 1:16 ` Andre Przywara [this message]
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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