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dbf85c4248
This target adds support for the StarFive JH7100 and JH7110 SoCs, based on 6.12, as well as a couple boards equipped with these. Installation: Standard SD-card installation via dd-ing the generated image to an SD-card of at least 256Mb. Signed-off-by: Zoltan HERPAI <wigyori@uid0.hu>
104 lines
3.2 KiB
Diff
104 lines
3.2 KiB
Diff
From 8deff65d2d7ffea00231ec592d956aebf7de0852 Mon Sep 17 00:00:00 2001
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From: Emil Renner Berthing <emil.renner.berthing@canonical.com>
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Date: Sat, 22 Jul 2023 18:50:49 +0200
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Subject: [PATCH 1020/1021] usb: cdns3: starfive: Initialize JH7100 host mode
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These settings are directly copied from StarFive's port of u-boot
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for the JH7100:
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/* config strap */
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_SET_SYSCON_REG_SCFG_usb0_mode_strap(0x2);
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_SET_SYSCON_REG_SCFG_usb7_PLL_EN(0x1);
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_SET_SYSCON_REG_SCFG_usb7_U3_EQ_EN(0x1);
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_SET_SYSCON_REG_SCFG_usb7_U3_SSRX_SEL(0x1);
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_SET_SYSCON_REG_SCFG_usb7_U3_SSTX_SEL(0x1);
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_SET_SYSCON_REG_SCFG_usb3_utmi_iddig(0x1);
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Signed-off-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
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---
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arch/riscv/boot/dts/starfive/jh7100.dtsi | 6 ++++
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drivers/usb/cdns3/cdns3-starfive.c | 43 ++++++++++++++++++++++++
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2 files changed, 49 insertions(+)
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--- a/arch/riscv/boot/dts/starfive/jh7100.dtsi
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+++ b/arch/riscv/boot/dts/starfive/jh7100.dtsi
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@@ -255,6 +255,11 @@
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#reset-cells = <1>;
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};
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+ sysaudio: syscon@104a0000 {
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+ compatible = "starfive,jh7100-sysaudio", "syscon";
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+ reg = <0x0 0x104a0000 0x0 0x10000>;
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+ };
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+
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usb3: usb@104c0000 {
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compatible = "starfive,jh7100-usb";
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ranges = <0x0 0x0 0x104c0000 0x100000>;
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@@ -268,6 +273,7 @@
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resets = <&rstgen JH7100_RSTN_USB_AXI>,
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<&rstgen JH7100_RSTN_USBNOC_AXI>;
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reset-names = "axi", "nocaxi";
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+ starfive,syscon = <&sysaudio>;
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status = "disabled";
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usb_cdns3: usb@0 {
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--- a/drivers/usb/cdns3/cdns3-starfive.c
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+++ b/drivers/usb/cdns3/cdns3-starfive.c
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@@ -20,6 +20,19 @@
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#include <linux/usb/otg.h>
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#include "core.h"
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+#define JH7100_USB0 0x20
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+#define JH7100_USB0_MODE_STRAP_MASK GENMASK(2, 0)
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+#define JH7100_USB0_MODE_STRAP_HOST 2
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+
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+#define JH7100_USB3 0x2c
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+#define JH7100_USB3_UTMI_IDDIG BIT(21)
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+
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+#define JH7100_USB7 0x3c
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+#define JH7100_USB7_SSRX_SEL BIT(18)
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+#define JH7100_USB7_SSTX_SEL BIT(19)
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+#define JH7100_USB7_PLL_EN BIT(23)
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+#define JH7100_USB7_EQ_EN BIT(25)
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+
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#define JH7110_STRAP_HOST BIT(17)
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#define JH7110_STRAP_DEVICE BIT(18)
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#define JH7110_STRAP_MASK GENMASK(18, 16)
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@@ -42,6 +55,36 @@ typedef int (cdns_starfive_mode_init_t)(
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static int cdns_jh7100_mode_init(struct device *dev, struct cdns_starfive *data)
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{
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+ struct regmap *syscon;
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+ enum usb_dr_mode mode;
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+
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+ syscon = syscon_regmap_lookup_by_phandle(dev->of_node, "starfive,syscon");
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+ if (IS_ERR(syscon))
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+ return dev_err_probe(dev, PTR_ERR(syscon),
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+ "failed to get starfive,syscon\n");
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+
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+ /* dr mode setting */
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+ mode = usb_get_dr_mode(dev);
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+
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+ switch (mode) {
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+ case USB_DR_MODE_HOST:
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+ regmap_update_bits(syscon, JH7100_USB0,
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+ JH7100_USB0_MODE_STRAP_MASK, JH7100_USB0_MODE_STRAP_HOST);
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+ regmap_update_bits(syscon, JH7100_USB7,
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+ JH7100_USB7_PLL_EN, JH7100_USB7_PLL_EN);
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+ regmap_update_bits(syscon, JH7100_USB7,
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+ JH7100_USB7_EQ_EN, JH7100_USB7_EQ_EN);
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+ regmap_update_bits(syscon, JH7100_USB7,
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+ JH7100_USB7_SSRX_SEL, JH7100_USB7_SSRX_SEL);
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+ regmap_update_bits(syscon, JH7100_USB7,
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+ JH7100_USB7_SSTX_SEL, JH7100_USB7_SSTX_SEL);
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+ regmap_update_bits(syscon, JH7100_USB3,
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+ JH7100_USB3_UTMI_IDDIG, JH7100_USB3_UTMI_IDDIG);
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+ break;
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+ default:
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+ break;
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+ }
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+
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return 0;
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}
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