build/patch/u-boot/v2022.07/0003-mmc-meson-gx-change-clock-phase-value-on-axg-SoCs.patch

55 lines
2.0 KiB
Diff

From 4ac22afaa40da590605cd725850b81bfb562b0fb Mon Sep 17 00:00:00 2001
From: Vyacheslav Bocharov <adeep@lexina.in>
Date: Thu, 2 Dec 2021 13:10:24 +0300
Subject: [PATCH 2/2] mmc: meson-gx: change clock phase value on axg SoCs
Amlogic AXG SoCs seems doesn't work over 50MHz. When phase sets to 270',
it's working fine over 50MHz on Amlogic AXG SoCs.
Based on 0dbb54eb3257c243c7968f967a6b183b1edb56c8 by Neil Armstrong
<narmstrong@baylibre.com>
To distinguish which value is used adds an u-boot only axg compatible.
---
drivers/mmc/meson_gx_mmc.c | 5 +++--
drivers/mmc/meson_gx_mmc.h | 1 +
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/meson_gx_mmc.c b/drivers/mmc/meson_gx_mmc.c
index fcf4f03d1e..718eae42ec 100644
--- a/drivers/mmc/meson_gx_mmc.c
+++ b/drivers/mmc/meson_gx_mmc.c
@@ -68,7 +68,8 @@ static void meson_mmc_config_clock(struct mmc *mmc)
* Other SoCs use CLK_CO_PHASE_180 by default.
* It needs to find what is a proper value about each SoCs.
*/
- if (meson_gx_mmc_is_compatible(mmc->dev, MMC_COMPATIBLE_SM1))
+ if (meson_gx_mmc_is_compatible(mmc->dev, MMC_COMPATIBLE_SM1) ||
+ meson_gx_mmc_is_compatible(mmc->dev, MMC_COMPATIBLE_AXG))
meson_mmc_clk |= CLK_CO_PHASE_270;
else
meson_mmc_clk |= CLK_CO_PHASE_180;
@@ -322,7 +323,7 @@ int meson_mmc_bind(struct udevice *dev)
static const struct udevice_id meson_mmc_match[] = {
{ .compatible = "amlogic,meson-gx-mmc", .data = MMC_COMPATIBLE_GX },
- { .compatible = "amlogic,meson-axg-mmc", .data = MMC_COMPATIBLE_GX },
+ { .compatible = "amlogic,meson-axg-mmc", .data = MMC_COMPATIBLE_AXG },
{ .compatible = "amlogic,meson-sm1-mmc", .data = MMC_COMPATIBLE_SM1 },
{ /* sentinel */ }
};
diff --git a/drivers/mmc/meson_gx_mmc.h b/drivers/mmc/meson_gx_mmc.h
index 8974b78f55..53201cedda 100644
--- a/drivers/mmc/meson_gx_mmc.h
+++ b/drivers/mmc/meson_gx_mmc.h
@@ -12,6 +12,7 @@
enum meson_gx_mmc_compatible {
MMC_COMPATIBLE_GX,
MMC_COMPATIBLE_SM1,
+ MMC_COMPATIBLE_AXG,
};
#define SDIO_PORT_A 0
--
2.30.2