From c413baa95c6ce4adda3646f0c4d5a3119f463de6 Mon Sep 17 00:00:00 2001
From: Kishon Vijay Abraham I <kishon@ti.com>
Date: Tue, 30 Jan 2018 16:01:52 +0100
Subject: [PATCH] ARM: DRA7x/AM57x: Add MMC/SD fixups for rev1.0 and rev 1.1

Since DRA7xx/AM57xx SR1.1 and SR1.0 has errata to limit the frequency of
MMC1 to 96MHz and frequency of MMC2 to 48MHz for AM572x SR1.1, limit the
frequency and disable higher speed modes for those revision.
Also use the recommended IO delays (those tagged with "rev11")

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
---
 board/ti/am57xx/board.c | 30 ++++++++++++++++++++++++++++++
 board/ti/dra7xx/evm.c   | 29 +++++++++++++++++++++++++++++
 2 files changed, 59 insertions(+)

diff --git a/board/ti/am57xx/board.c b/board/ti/am57xx/board.c
index c3f60f60c8..5bd8778563 100644
--- a/board/ti/am57xx/board.c
+++ b/board/ti/am57xx/board.c
@@ -30,6 +30,7 @@
 #include <dwc3-uboot.h>
 #include <dwc3-omap-uboot.h>
 #include <ti-usb-phy-uboot.h>
+#include <mmc.h>
 
 #include "../common/board_detect.h"
 #include "mux_data.h"
@@ -815,6 +816,35 @@ int board_mmc_init(bd_t *bis)
 	omap_mmc_init(1, 0, 0, -1, -1);
 	return 0;
 }
+
+static const struct mmc_platform_fixups am57x_es1_1_mmc1_fixups = {
+	.hw_rev = "rev11",
+	.unsupported_caps = MMC_CAP(MMC_HS_200) |
+			    MMC_CAP(UHS_SDR104),
+	.max_freq = 96000000,
+};
+
+static const struct mmc_platform_fixups am57x_es1_1_mmc23_fixups = {
+	.hw_rev = "rev11",
+	.unsupported_caps = MMC_CAP(MMC_HS_200) |
+			    MMC_CAP(UHS_SDR104) |
+			    MMC_CAP(UHS_SDR50),
+	.max_freq = 48000000,
+};
+
+const struct mmc_platform_fixups *platform_fixups_mmc(uint32_t addr)
+{
+	switch (omap_revision()) {
+	case DRA752_ES1_0:
+	case DRA752_ES1_1:
+		if (addr == OMAP_HSMMC1_BASE)
+			return &am57x_es1_1_mmc1_fixups;
+		else
+			return &am57x_es1_1_mmc23_fixups;
+	default:
+		return NULL;
+	}
+}
 #endif
 
 #if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_OS_BOOT)
diff --git a/board/ti/dra7xx/evm.c b/board/ti/dra7xx/evm.c
index 519475e01f..06f061c92c 100644
--- a/board/ti/dra7xx/evm.c
+++ b/board/ti/dra7xx/evm.c
@@ -866,6 +866,35 @@ void board_mmc_poweron_ldo(uint voltage)
 		palmas_mmc1_poweron_ldo(LDO1_VOLTAGE, LDO1_CTRL, voltage);
 	}
 }
+
+static const struct mmc_platform_fixups dra7x_es1_1_mmc1_fixups = {
+	.hw_rev = "rev11",
+	.unsupported_caps = MMC_CAP(MMC_HS_200) |
+			    MMC_CAP(UHS_SDR104),
+	.max_freq = 96000000,
+};
+
+static const struct mmc_platform_fixups dra7x_es1_1_mmc23_fixups = {
+	.hw_rev = "rev11",
+	.unsupported_caps = MMC_CAP(MMC_HS_200) |
+			    MMC_CAP(UHS_SDR104) |
+			    MMC_CAP(UHS_SDR50),
+	.max_freq = 48000000,
+};
+
+const struct mmc_platform_fixups *platform_fixups_mmc(uint32_t addr)
+{
+	switch (omap_revision()) {
+	case DRA752_ES1_0:
+	case DRA752_ES1_1:
+		if (addr == OMAP_HSMMC1_BASE)
+			return &dra7x_es1_1_mmc1_fixups;
+		else
+			return &dra7x_es1_1_mmc23_fixups;
+	default:
+		return NULL;
+	}
+}
 #endif
 
 #ifdef CONFIG_USB_DWC3
-- 
2.39.2