On Mon, Apr 17, 2023 at 07:32:30PM +0200, Marek Vasut wrote:
On 3/8/23 21:26, Ralph Siemsen wrote:
[...]
+#define FUNCCTRL 0x00
+#define FUNCCTRL_MASKSDLOFS (0x18 << 16)
+#define FUNCCTRL_DVDDQ_1_5V (1 << 8)
+#define FUNCCTRL_RESET_N (1 << 0)
+#define DLLCTRL 0x04
+#define DLLCTRL_ASDLLOCK (1 << 26)
+#define DLLCTRL_MFSL_500MHz (2 << 1)
+#define DLLCTRL_MDLLSTBY (1 << 0)
Use BIT() macro where applicable.
Will do.
+ /* DDR PHY setup */
+ phy_writel(DLLCTRL_MFSL_500MHz | DLLCTRL_MDLLSTBY, DLLCTRL);
+ phy_writel(0x00000182, ZQCALCTRL);
+ if (ddr_type == RZN1_DDR3_DUAL_BANK)
+ phy_writel(0xAB330031, ZQODTCTRL);
+ else if (ddr_type == RZN1_DDR3_SINGLE_BANK)
+ phy_writel(0xAB320051, ZQODTCTRL);
+ else /* DDR2 */
+ phy_writel(0xAB330071, ZQODTCTRL);
+ phy_writel(0xB545B544, RDCTRL);
+ phy_writel(0x000000B0, RDTMG);
+ phy_writel(0x020A0806, OUTCTRL);
+ if (ddr_type == RZN1_DDR3_DUAL_BANK)
+ phy_writel(0x80005556, WLCTRL1);
+ else
+ phy_writel(0x80005C5D, WLCTRL1);
+ phy_writel(0x00000101, FIFOINIT);
+ phy_writel(0x00004545, DQCALOFS1);
Is there any macro which defines those magic bits in magic numbers ?
If so, please use them.
This init sequence came from the u-boot 2017 repo published by Renesas.
There do not appear to be any macros to help with all these magic
numbers.
+ /* DDR Controller is always in ASYNC mode */
+ cdns_ddr_ctrl_init((void *)RZN1_DDR_BASE, 1,
+ ddr_00_87_async, ddr_350_374_async,
+ ddr_start_addr, CFG_SYS_SDRAM_SIZE,
+ priv->enable_ecc, priv->enable_8bit);
+
+ rzn1_ddr3_single_bank((void *)RZN1_DDR_BASE);
Can you obtain the DRAM base from DT ?
I'll check if it is possible.
+ priv->syscon = syscon_regmap_lookup_by_phandle(dev, "syscon");
+ if (IS_ERR(priv->syscon)) {
+ dev_err(dev, "No syscon node found\n");
+ //return PTR_ERR(priv->syscon);
This shouldn't be commented out, right ?
Does indeed look like an oversight. I'll fix it up, thanks for spotting!
Ralph
